Merge branch 'master' into 420upd

2025-09-25 20:00:54 +02:00 · 2022-09-29 09:24:42 +02:00
parent 0d4939e135 1ff79c6c38
commit e6ee257ca2
206 changed files with 1085 additions and 607 deletions
--- a/.gitattributes
+++ b/.gitattributes
@@ -7,11 +7,10 @@

 # exclude from git export
 /tests export-ignore
-/demo export-ignore
-/docs export-ignore
 /utilities export-ignore
 /docker-compose.yml export-ignore
 /.github export-ignore
+/run_tests_for_all_php_versions.sh export-ignore
 /.gitattributes export-ignore
 /.gitignore export-ignore
 /make-release.sh export-ignore
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,8 +1,10 @@
 # https://help.github.com/en/categories/automating-your-workflow-with-github-actions

 on:
-  - pull_request
-  - push
+  pull_request:
+  push:
+    branches:
+      - 'master'

 name: CI

@@ -69,9 +71,5 @@ jobs:
        restore-keys: |
          ${{ runner.os }}-php-${{ matrix.php-version }}-

-    - name: Install dependencies
-      if: steps.composer-cache.outputs.cache-hit != 'true'
-      run: composer install --prefer-dist --no-progress --no-suggest
-
    - name: Run tests with phpunit
-      run: ./phpunit.sh
+      run: ./run-tests.sh
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,32 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0

 ## [Unreleased]

+### Changed
+- Include docs and demo in the releases [#799](https://github.com/smarty-php/smarty/issues/799)
+- Using PHP functions as modifiers now triggers a deprecation notice because we will drop support for this in the next major release [#813](https://github.com/smarty-php/smarty/issues/813) 
+-  Dropped remaining references to removed PHP-support in Smarty 4 from docs, lexer and security class. [#816](https://github.com/smarty-php/smarty/issues/816)
+
+### Fixed
+- Output buffer is now cleaned for internal PHP errors as well, not just for Exceptions [#514](https://github.com/smarty-php/smarty/issues/514)
+- Fixed recursion and out of memory errors when caching in complicated template set-ups using inheritance and includes [#801](https://github.com/smarty-php/smarty/pull/801)
+- Fixed PHP8.1 deprecation errors in strip_tags 
+- Fix Variable Usage in Exception message when unable to load subtemplate [#808](https://github.com/smarty-php/smarty/pull/808)
+- Fixed PHP8.1 deprecation notices for strftime [#672](https://github.com/smarty-php/smarty/issues/672)
+- Fixed PHP8.1 deprecation errors passing null to parameter in trim [#807](https://github.com/smarty-php/smarty/pull/807)
+- Adapt Smarty upper/lower functions to be codesafe (e.g. for Turkish locale) [#586](https://github.com/smarty-php/smarty/pull/586)
+- Bug fix for underscore and limited length in template name in custom resources [#581](https://github.com/smarty-php/smarty/pull/581)
+
+## [4.2.1] - 2022-09-14
+
+### Security
+- Applied appropriate javascript and html escaping in mailto plugin to counter injection attacks [#454](https://github.com/smarty-php/smarty/issues/454)
+
+### Fixed
+- Fixed PHP8.1 deprecation notices in modifiers (upper, explode, number_format and replace) [#755](https://github.com/smarty-php/smarty/pull/755) and [#788](https://github.com/smarty-php/smarty/pull/788)
+- Fixed PHP8.1 deprecation notices in capitalize modifier [#789](https://github.com/smarty-php/smarty/issues/789)
+- Fixed use of `rand()` without a parameter in math function [#794](https://github.com/smarty-php/smarty/issues/794)
+- Fixed unselected year/month/day not working in html_select_date [#395](https://github.com/smarty-php/smarty/issues/395)
+
 ## [4.2.0] - 2022-08-01

 ### Fixed
--- a/SECURITY.md
+++ b/SECURITY.md
@@ -2,7 +2,7 @@

 ## Supported Versions

-Smarty currently supports the latest minor version of Smarty 3 and Smarty 4. (Smarty 4 has not been released yet.)
+Smarty currently supports the latest minor version of Smarty 3 and Smarty 4.

 | Version | Supported          |
 | ------- | ------------------ |
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -3,10 +3,11 @@ services:
  base:
    build:
      context: .
+      dockerfile: ./utilities/testrunners/php71/Dockerfile
    volumes:
      - .:/app
    working_dir: /app
-    entrypoint: sh ./utilities/testrunners/run-test.sh
+    entrypoint: sh ./run-tests.sh
  php71:
    extends:
      service: base
--- a/docs/appendixes/tips.md
+++ b/docs/appendixes/tips.md
@@ -188,67 +188,6 @@ See also [`{html_select_date}`](#language.function.html.select.date),
 [`date_format`](#language.modifier.date.format) and
 [`$smarty.now`](#language.variables.smarty.now),

-WAP/WML {#tips.wap}
-=======
-
-WAP/WML templates require a php [Content-Type
-header](&url.php-manual;header) to be passed along with the template.
-The easist way to do this would be to write a custom function that
-prints the header. If you are using [caching](#caching), that won\'t
-work so we\'ll do it using the [`{insert}`](#language.function.insert)
-tag; remember `{insert}` tags are not cached! Be sure that there is
-nothing output to the browser before the template, or else the header
-may fail.
-
-
-    <?php
-
-    // be sure apache is configure for the .wml extensions!
-    // put this function somewhere in your application, or in Smarty.addons.php
-    function insert_header($params)
-    {
-       // this function expects $content argument
-       if (empty($params['content'])) {
-           return;
-       }
-       header($params['content']);
-       return;
-    }
-
-    ?>
-
-        
-
-your Smarty template *must* begin with the insert tag :
-
-
-    {insert name=header content="Content-Type: text/vnd.wap.wml"}
-
-    <?xml version="1.0"?>
-    <!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN" "http://www.wapforum.org/DTD/wml_1.1.xml">
-
-    <!-- begin new wml deck -->
-    <wml>
-     <!-- begin first card -->
-     <card>
-      <do type="accept">
-       <go href="#two"/>
-      </do>
-      <p>
-       Welcome to WAP with Smarty!
-       Press OK to continue...
-      </p>
-     </card>
-     <!-- begin second card -->
-     <card id="two">
-      <p>
-       Pretty easy isn't it?
-      </p>
-     </card>
-    </wml>
-
-        
-
 Componentized Templates {#tips.componentized.templates}
 =======================

@@ -259,7 +198,7 @@ Smarty object, [`assign()`](#api.assign) the variables and
 [`display()`](#api.display) the template. So lets say for example we
 have a stock ticker on our template. We would collect the stock data in
 our application, then assign these variables in the template and display
-it. Now wouldn\'t it be nice if you could add this stock ticker to any
+it. Now wouldn't it be nice if you could add this stock ticker to any
 application by merely including the template, and not worry about
 fetching the data up front?

@@ -301,9 +240,7 @@ assigning it to a template variable.

        

-See also [`{include_php}`](#language.function.include.php),
-[`{include}`](#language.function.include) and
-[`{php}`](#language.function.php).
+See also: [`{include}`](#language.function.include).

 Obfuscating E-mail Addresses {#tips.obfuscating.email}
 ============================
--- a/docs/designers/language-basic-syntax/language-syntax-attributes.md
+++ b/docs/designers/language-basic-syntax/language-syntax-attributes.md
@@ -3,7 +3,7 @@ Attributes {#language.syntax.attributes}

 Most of the [functions](#language.syntax.functions) take attributes that
 specify or modify their behavior. Attributes to Smarty functions are
-much like HTML attributes. Static values don\'t have to be enclosed in
+much like HTML attributes. Static values don't have to be enclosed in
 quotes, but it is required for literal strings. Variables with or
 without modifiers may also be used, and should not be in quotes. You can
 even use PHP function results, plugin results and complex expressions.
--- a/docs/designers/language-builtin-functions.md
+++ b/docs/designers/language-builtin-functions.md
@@ -16,7 +16,6 @@ Built-in Functions {#language.builtin.functions}
 - [{function}](./language-builtin-functions/language-function-function.md)
 - [{if},{elseif},{else}](./language-builtin-functions/language-function-if.md)
 - [{include}](./language-builtin-functions/language-function-include.md)
- [{include_php}](./language-builtin-functions/language-function-include.php)
 - [{insert}](./language-builtin-functions/language-function-insert.md)
 - [{ldelim},{rdelim}](./language-builtin-functions/language-function-ldelim.md)
 - [{literal}](./language-builtin-functions/language-function-literal.md)
--- a/docs/designers/language-builtin-functions/language-function-assign.md
+++ b/docs/designers/language-builtin-functions/language-function-assign.md
@@ -135,7 +135,6 @@ The following functions can also *optionally* assign template variables.

 [`{capture}`](#language.function.capture),
 [`{include}`](#language.function.include),
-[`{include_php}`](#language.function.include.php),
 [`{insert}`](#language.function.insert),
 [`{counter}`](#language.function.counter),
 [`{cycle}`](#language.function.cycle),
--- a/docs/designers/language-builtin-functions/language-function-include-php.md
+++ b/docs/designers/language-builtin-functions/language-function-include-php.md
@@ -1,74 +0,0 @@
-{include\_php} {#language.function.include.php}
-==============
-
-> **Note**
->
-> `{include_php}` is deprecated from Smarty, use registered plugins to
-> properly insulate presentation from the application code. As of Smarty
-> 3.1 the `{include_php}` tags are only available from [SmartyBC](#bc).
-
-   Attribute Name    Type     Required   Default  Description
-  ---------------- --------- ---------- --------- ----------------------------------------------------------------------------------
-        file        string      Yes       *n/a*   The name of the php file to include as absolute path
-        once        boolean      No      *TRUE*   whether or not to include the php file more than once if included multiple times
-       assign       string       No       *n/a*   The name of the variable that the output of include\_php will be assigned to
-
-**Option Flags:**
-
-    Name    Description
-  --------- ----------------------------------------
-   nocache  Disables caching of inluded PHP script
-
-`{include_php}` tags are used to include a php script in your template.
-The path of the attribute `file` can be either absolute, or relative to
-[`$trusted_dir`](#variable.trusted.dir). If security is enabled, then
-the script must be located in the `$trusted_dir` path of the securty
-policy. See the [Security](#advanced.features.security) section for
-details.
-
-By default, php files are only included once even if called multiple
-times in the template. You can specify that it should be included every
-time with the `once` attribute. Setting once to FALSE will include the
-php script each time it is included in the template.
-
-You can optionally pass the `assign` attribute, which will specify a
-template variable name that the output of `{include_php}` will be
-assigned to instead of displayed.
-
-The smarty object is available as `$_smarty_tpl->smarty` within the PHP
-script that you include.
-
-The `load_nav.php` file:
-
-
-    <?php
-
-    // load in variables from a mysql db and assign them to the template
-    require_once('database.class.php');
-    $db = new Db();
-    $db->query('select url, name from navigation order by name');
-    $this->assign('navigation', $db->getRows());
-
-    ?>
-
-      
-
-where the template is:
-
-
-    {* absolute path, or relative to $trusted_dir *}
-    {include_php file='/path/to/load_nav.php'}
-    {include_php '/path/to/load_nav.php'}             {* short-hand *}
-
-    {foreach item='nav' from=$navigation}
-      <a href="{$nav.url}">{$nav.name}</a><br />
-    {/foreach}
-
-      
-
-See also [`{include}`](#language.function.include),
-[`$trusted_dir`](#variable.trusted.dir),
-[`{php}`](#language.function.php),
-[`{capture}`](#language.function.capture), [template
-resources](#resources) and [componentized
-templates](#tips.componentized.templates)
--- a/docs/designers/language-builtin-functions/language-function-include.md
+++ b/docs/designers/language-builtin-functions/language-function-include.md
@@ -188,7 +188,5 @@ current template.

      

-See also [`{include_php}`](#language.function.include.php),
-[`{insert}`](#language.function.insert),
-[`{php}`](#language.function.php), [template resources](#resources) and
+See also [`{insert}`](#language.function.insert), [template resources](#resources) and
 [componentized templates](#tips.componentized.templates).
--- a/docs/programmers/advanced-features/advanced-features-security.md
+++ b/docs/programmers/advanced-features/advanced-features-security.md
@@ -8,22 +8,6 @@ security compromises through the template language.
 The settings of the security policy are defined by properties of an
 instance of the Smarty\_Security class. These are the possible settings:

-   `$php_handling` determines how Smarty to handle PHP code embedded in
-    templates. Possible values are:
-
-    -   Smarty::PHP\_PASSTHRU -\> echo PHP tags as they are
-
-    -   Smarty::PHP\_QUOTE -\> escape tags as entities
-
-    -   Smarty::PHP\_REMOVE -\> remove php tags
-
-    -   Smarty::PHP\_ALLOW -\> execute php tags
-
-    The default value is Smarty::PHP\_PASSTHRU.
-
-    If security is enabled the [`$php_handling`](#variable.php.handling)
-    setting of the Smarty object is not checked for security.
-
 -   `$secure_dir` is an array of template directories that are
    considered secure. [`$template_dir`](#variable.template.dir)
    concidered secure implicitly. The default is an empty array.
@@ -31,7 +15,7 @@ instance of the Smarty\_Security class. These are the possible settings:
 -   `$trusted_dir` is an array of all directories that are considered
    trusted. Trusted directories are where you keep php scripts that are
    executed directly from the templates with
-    [`{include_php}`](#language.function.include.php). The default is an
+    [`{insert}`](#language.function.insert.php). The default is an
    empty array.

 -   `$trusted_uri` is an array of regular expressions matching URIs that
@@ -110,12 +94,8 @@ instance of the Smarty\_Security class. These are the possible settings:
    super globals can be accessed by the template. The default is
    \"true\".

-   `$allow_php_tag` is a boolean flag which controls if {php} and
-    {include\_php} tags can be used by the template. The default is
-    \"false\".
-
 If security is enabled, no private methods, functions or properties of
-static classes or assigned objects can be accessed (beginningwith
+static classes or assigned objects can be accessed (beginning with
 \'\_\') by the template.

 To customize the security policy settings you can extend the
@@ -128,8 +108,6 @@ Smarty\_Security class or create an instance of it.
    class My_Security_Policy extends Smarty_Security {
      // disable all PHP functions
      public $php_functions = null;
-      // remove PHP tags
-      public $php_handling = Smarty::PHP_REMOVE;
      // allow everthing as modifier
      public $php_modifiers = array();
    }
@@ -145,8 +123,6 @@ Smarty\_Security class or create an instance of it.
    $my_security_policy = new Smarty_Security($smarty);
    // disable all PHP functions
    $my_security_policy->php_functions = null;
-    // remove PHP tags
-    $my_security_policy->php_handling = Smarty::PHP_REMOVE;
    // allow everthing as modifier
    $my_security_policy->php_modifiers = array();
    // enable security
--- a/docs/programmers/api-variables.md
+++ b/docs/programmers/api-variables.md
@@ -39,7 +39,6 @@ them directly, or use the corresponding setter/getter methods.
 - [$left_delimiter](./api-variables/variable-left-delimiter.md)
 - [$locking_timeout](./api-variables/variable-locking-timeout.md)
 - [$merge_compiled_includes](./api-variables/variable-merge-compiled-includes.md)
- [$php_handling](./api-variables/variable-php-handling.md)
 - [$plugins_dir](./api-variables/variable-plugins-dir.md)
 - [$right_delimiter](./api-variables/variable-right-delimiter.md)
 - [$smarty_debug_id](./api-variables/variable-smarty-debug-id.md)
--- a/docs/programmers/api-variables/variable-php-handling.md
+++ b/docs/programmers/api-variables/variable-php-handling.md
@@ -1,21 +0,0 @@
-\$php\_handling {#variable.php.handling}
-===============
-
-This tells Smarty how to handle PHP code embedded in the templates.
-There are four possible settings, the default being
-`Smarty::PHP_PASSTHRU`. Note that this does NOT affect php code within
-[`{php}{/php}`](#language.function.php) tags in the template.
-
-   `Smarty::PHP_PASSTHRU` - Smarty echos tags as-is.
-
-   `Smarty::PHP_QUOTE` - Smarty quotes the tags as html entities.
-
-   `Smarty::PHP_REMOVE` - Smarty removes the tags from the templates.
-
-   `Smarty::PHP_ALLOW` - Smarty will execute the tags as PHP code.
-
-> **Note**
->
-> Embedding PHP code into templates is highly discouraged. Use [custom
-> functions](#plugins.functions) or [modifiers](#plugins.modifiers)
-> instead.
--- a/docs/programmers/api-variables/variable-trusted-dir.md
+++ b/docs/programmers/api-variables/variable-trusted-dir.md
@@ -5,4 +5,4 @@
 array of all directories that are considered trusted. Trusted
 directories are where you keep php scripts that are executed directly
 from the templates with
-[`{include_php}`](#language.function.include.php).
+[`{insert}`](#language.function.insert.php).
--- a/docs/programmers/smarty-constants.md
+++ b/docs/programmers/smarty-constants.md
@@ -23,5 +23,4 @@ to determine the appropriate value automatically. If defined, the path

         

-See also [`$smarty.const`](../designers/language-variables/language-variables-smarty.md) and
-[`$php_handling constants`](./api-variables/variable-php-handling.md)
+See also [`$smarty.const`](../designers/language-variables/language-variables-smarty.md).
--- a/lexer/smarty_internal_templatelexer.plex
+++ b/lexer/smarty_internal_templatelexer.plex
@@ -161,7 +161,6 @@ class Smarty_Internal_Templatelexer
                                               'COMMENT'     => 'comment',
                                               'AS'          => 'as',
                                               'TO'          => 'to',
-                                               'PHP'         => '"<?php", "<%", "{php}" tag',
                                               'LOGOP'       => '"<", "==" ... logical operator',
                                               'TLOGOP'      => '"lt", "eq" ... logical operator; "is div by" ... if condition',
                                               'SCOND'       => '"is even" ... if condition',
--- a/libs/Autoloader.php
+++ b/libs/Autoloader.php
@@ -5,6 +5,11 @@
 * @package Smarty
 */

+
+if (!defined('SMARTY_HELPER_FUNCTIONS_LOADED')) {
+	include __DIR__ . '/functions.php';
+}
+
 /**
 * Smarty Autoloader
 *
@@ -48,7 +53,7 @@ class Smarty_Autoloader
     */
    public static function register($prepend = false)
    {
-        self::$SMARTY_DIR = defined('SMARTY_DIR') ? SMARTY_DIR : dirname(__FILE__) . DIRECTORY_SEPARATOR;
+        self::$SMARTY_DIR = defined('SMARTY_DIR') ? SMARTY_DIR : __DIR__ . DIRECTORY_SEPARATOR;
        self::$SMARTY_SYSPLUGINS_DIR = defined('SMARTY_SYSPLUGINS_DIR') ? SMARTY_SYSPLUGINS_DIR :
            self::$SMARTY_DIR . 'sysplugins' . DIRECTORY_SEPARATOR;
        spl_autoload_register(array(__CLASS__, 'autoload'), true, $prepend);
@@ -64,7 +69,7 @@ class Smarty_Autoloader
        if ($class[ 0 ] !== 'S' || strpos($class, 'Smarty') !== 0) {
            return;
        }
-        $_class = strtolower($class);
+        $_class = smarty_strtolower_ascii($class);
        if (isset(self::$rootClasses[ $_class ])) {
            $file = self::$SMARTY_DIR . self::$rootClasses[ $_class ];
            if (is_file($file)) {
--- a/libs/Smarty.class.php
+++ b/libs/Smarty.class.php
@@ -36,7 +36,7 @@ if (!defined('SMARTY_DIR')) {
    /**
     *
     */
-    define('SMARTY_DIR', dirname(__FILE__) . DIRECTORY_SEPARATOR);
+    define('SMARTY_DIR', __DIR__ . DIRECTORY_SEPARATOR);
 }
 /**
 * set SMARTY_SYSPLUGINS_DIR to absolute path to Smarty internal plugins.
@@ -60,12 +60,21 @@ if (!defined('SMARTY_MBSTRING')) {
     */
    define('SMARTY_MBSTRING', function_exists('mb_get_info'));
 }
+
+/**
+ * Load helper functions
+ */
+if (!defined('SMARTY_HELPER_FUNCTIONS_LOADED')) {
+    include __DIR__ . '/functions.php';
+}
+
 /**
 * Load Smarty_Autoloader
 */
 if (!class_exists('Smarty_Autoloader')) {
-    include dirname(__FILE__) . '/bootstrap.php';
+    include __DIR__ . '/bootstrap.php';
 }
+
 /**
 * Load always needed external class files
 */
@@ -98,7 +107,7 @@ class Smarty extends Smarty_Internal_TemplateBase
    /**
     * smarty version
     */
-    const SMARTY_VERSION = '4.2.0';
+    const SMARTY_VERSION = '4.2.1';
    /**
     * define variable scopes
     */
--- a/libs/bootstrap.php
+++ b/libs/bootstrap.php
@@ -11,6 +11,6 @@
 * Load and register Smarty Autoloader
 */
 if (!class_exists('Smarty_Autoloader')) {
-    include dirname(__FILE__) . '/Autoloader.php';
+    include __DIR__ . '/Autoloader.php';
 }
 Smarty_Autoloader::register(true);
--- a/libs/functions.php
+++ b/libs/functions.php
@@ -0,0 +1,51 @@
+<?php
+/**
+ * This file is part of the Smarty package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+/**
+ * Registers some helper/polyfill functions.
+ */
+
+const SMARTY_HELPER_FUNCTIONS_LOADED = true;
+
+/**
+ * Converts the first characters in $string to uppercase (A-Z) if it is an ASCII lowercase character (a-z).
+ *
+ * May not be required when running PHP8.2+: https://wiki.php.net/rfc/strtolower-ascii
+ *
+ * @param $string
+ *
+ * @return string
+ */
+function smarty_ucfirst_ascii($string): string {
+    return smarty_strtoupper_ascii(substr($string, 0, 1)) . substr($string, 1);
+}
+
+/**
+ * Converts all uppercase ASCII characters (A-Z) in $string to lowercase (a-z).
+ *
+ * May not be required when running PHP8.2+: https://wiki.php.net/rfc/strtolower-ascii
+ *
+ * @param $string
+ *
+ * @return string
+ */
+function smarty_strtolower_ascii($string): string {
+    return strtr($string, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz');
+}
+
+/**
+ * Converts all lowercase ASCII characters (a-z) in $string to uppercase (A-Z).
+ *
+ * May not be required when running PHP8.2+: https://wiki.php.net/rfc/strtolower-ascii
+ *
+ * @param $string
+ *
+ * @return string
+ */
+function smarty_strtoupper_ascii($string): string {
+    return strtr($string, 'abcdefghijklmnopqrstuvwxyz', 'ABCDEFGHIJKLMNOPQRSTUVWXYZ');
+}
--- a/libs/plugins/function.html_select_date.php
+++ b/libs/plugins/function.html_select_date.php
@@ -101,6 +101,7 @@ function smarty_function_html_select_date($params, Smarty_Internal_Template $tem
    $field_separator = "\n";
    $option_separator = "\n";
    $time = null;
+
    // $all_empty = null;
    // $day_empty = null;
    // $month_empty = null;
@@ -113,17 +114,7 @@ function smarty_function_html_select_date($params, Smarty_Internal_Template $tem
    foreach ($params as $_key => $_value) {
        switch ($_key) {
            case 'time':
-                if (!is_array($_value) && $_value !== null) {
-                    $template->_checkPlugins(
-                        array(
-                            array(
-                                'function' => 'smarty_make_timestamp',
-                                'file'     => SMARTY_PLUGINS_DIR . 'shared.make_timestamp.php'
-                            )
-                        )
-                    );
-                    $time = smarty_make_timestamp($_value);
-                }
+                $$_key = $_value; // we'll handle conversion below
                break;
            case 'month_names':
                if (is_array($_value) && count($_value) === 12) {
@@ -178,41 +169,57 @@ function smarty_function_html_select_date($params, Smarty_Internal_Template $tem
    }
    // Note: date() is faster than strftime()
    // Note: explode(date()) is faster than date() date() date()
-    if (isset($params[ 'time' ]) && is_array($params[ 'time' ])) {
-        if (isset($params[ 'time' ][ $prefix . 'Year' ])) {
+
+    if (isset($time) && is_array($time)) {
+        if (isset($time[$prefix . 'Year'])) {
            // $_REQUEST[$field_array] given
-            foreach (array(
+            foreach ([
                         'Y' => 'Year',
                         'm' => 'Month',
                         'd' => 'Day'
-            ) as $_elementKey => $_elementName) {
+                     ] as $_elementKey => $_elementName) {
                $_variableName = '_' . strtolower($_elementName);
                $$_variableName = $params[ 'time' ][ $prefix . $_elementName ] ?? date($_elementKey);
            }
-        } elseif (isset($params[ 'time' ][ $field_array ][ $prefix . 'Year' ])) {
+        } elseif (isset($time[$field_array][$prefix . 'Year'])) {
            // $_REQUEST given
-            foreach (array(
+            foreach ([
                         'Y' => 'Year',
                         'm' => 'Month',
                         'd' => 'Day'
-            ) as $_elementKey => $_elementName) {
+                     ] as $_elementKey => $_elementName) {
                $_variableName = '_' . strtolower($_elementName);
-                $$_variableName = isset($params[ 'time' ][ $field_array ][ $prefix . $_elementName ]) ?
-                    $params[ 'time' ][ $field_array ][ $prefix . $_elementName ] : date($_elementKey);
+                $$_variableName = isset($time[$field_array][$prefix . $_elementName]) ?
+                    $time[$field_array][$prefix . $_elementName] : date($_elementKey);
            }
        } else {
            // no date found, use NOW
-            list($_year, $_month, $_day) = $time = explode('-', date('Y-m-d'));
+            [$_year, $_month, $_day] = explode('-', date('Y-m-d'));
        }
+    } elseif (isset($time) && preg_match("/(\d*)-(\d*)-(\d*)/", $time, $matches)) {
+        $_year = $_month = $_day = null;
+        if ($matches[1] > '') $_year = (int) $matches[1];
+        if ($matches[2] > '') $_month = (int) $matches[2];
+        if ($matches[3] > '') $_day = (int) $matches[3];
    } elseif ($time === null) {
        if (array_key_exists('time', $params)) {
-            $_year = $_month = $_day = $time = null;
+            $_year = $_month = $_day = null;
        } else {
-            list($_year, $_month, $_day) = $time = explode('-', date('Y-m-d'));
+            [$_year, $_month, $_day] = explode('-', date('Y-m-d'));
        }
    } else {
-        list($_year, $_month, $_day) = $time = explode('-', date('Y-m-d', $time));
+        $template->_checkPlugins(
+            array(
+                array(
+                    'function' => 'smarty_make_timestamp',
+                    'file'     => SMARTY_PLUGINS_DIR . 'shared.make_timestamp.php'
+                )
+            )
+        );
+        $time = smarty_make_timestamp($time);
+        [$_year, $_month, $_day] = explode('-', date('Y-m-d', $time));
    }
+
    // make syntax "+N" or "-N" work with $start_year and $end_year
    // Note preg_match('!^(\+|\-)\s*(\d+)$!', $end_year, $match) is slower than trim+substr
    foreach (array(
--- a/libs/plugins/function.mailto.php
+++ b/libs/plugins/function.mailto.php
@@ -48,8 +48,13 @@
 */
 function smarty_function_mailto($params)
 {
-    static $_allowed_encoding =
-        array('javascript' => true, 'javascript_charcode' => true, 'hex' => true, 'none' => true);
+    static $_allowed_encoding = [
+        'javascript' => true,
+        'javascript_charcode' => true,
+        'hex' => true,
+        'none' => true
+    ];
+
    $extra = '';
    if (empty($params[ 'address' ])) {
        trigger_error("mailto: missing 'address' parameter", E_USER_WARNING);
@@ -57,19 +62,19 @@ function smarty_function_mailto($params)
    } else {
        $address = $params[ 'address' ];
    }
+
    $text = $address;
+
    // netscape and mozilla do not decode %40 (@) in BCC field (bug?)
    // so, don't encode it.
-    $search = array('%40', '%2C');
-    $replace = array('@', ',');
-    $mail_parms = array();
+    $mail_parms = [];
    foreach ($params as $var => $value) {
        switch ($var) {
            case 'cc':
            case 'bcc':
            case 'followupto':
                if (!empty($value)) {
-                    $mail_parms[] = $var . '=' . str_replace($search, $replace, rawurlencode($value));
+                    $mail_parms[] = $var . '=' . str_replace(['%40', '%2C'], ['@', ','], rawurlencode($value));
                }
                break;
            case 'subject':
@@ -83,6 +88,7 @@ function smarty_function_mailto($params)
            default:
        }
    }
+
    if ($mail_parms) {
        $address .= '?' . join('&', $mail_parms);
    }
@@ -94,15 +100,17 @@ function smarty_function_mailto($params)
        );
        return;
    }
+
+    $string = '<a href="mailto:' . htmlspecialchars($address, ENT_QUOTES | ENT_SUBSTITUTE | ENT_HTML401, Smarty::$_CHARSET) .
+        '" ' . $extra . '>' . htmlspecialchars($text, ENT_QUOTES | ENT_SUBSTITUTE | ENT_HTML401, Smarty::$_CHARSET) . '</a>';
+
    if ($encode === 'javascript') {
-        $string = '<a href="mailto:' . $address . '" ' . $extra . '>' . $text . '</a>';
        $js_encode = '';
        for ($x = 0, $_length = strlen($string); $x < $_length; $x++) {
            $js_encode .= '%' . bin2hex($string[ $x ]);
        }
        return '<script type="text/javascript">document.write(unescape(\'' . $js_encode . '\'))</script>';
    } elseif ($encode === 'javascript_charcode') {
-        $string = '<a href="mailto:' . $address . '" ' . $extra . '>' . $text . '</a>';
        for ($x = 0, $_length = strlen($string); $x < $_length; $x++) {
            $ord[] = ord($string[ $x ]);
        }
@@ -129,6 +137,6 @@ function smarty_function_mailto($params)
        return '<a href="' . $mailto . $address_encode . '" ' . $extra . '>' . $text_encode . '</a>';
    } else {
        // no encoding
-        return '<a href="mailto:' . $address . '" ' . $extra . '>' . $text . '</a>';
+        return $string;
    }
 }
--- a/libs/plugins/function.math.php
+++ b/libs/plugins/function.math.php
@@ -70,7 +70,7 @@ function smarty_function_math($params, $template)
    $number = '(?:\d+(?:[,.]\d+)?|pi|π)'; // What is a number
    $functionsOrVars = '((?:0x[a-fA-F0-9]+)|([a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*))';
    $operators = '[,+\/*\^%-]'; // Allowed math operators
-    $regexp = '/^(('.$number.'|'.$functionsOrVars.'|('.$functionsOrVars.'\s*\((?1)+\)|\((?1)+\)))(?:'.$operators.'(?1))?)+$/';
+    $regexp = '/^(('.$number.'|'.$functionsOrVars.'|('.$functionsOrVars.'\s*\((?1)*\)|\((?1)*\)))(?:'.$operators.'(?1))?)+$/';

    if (!preg_match($regexp, $equation)) {
        trigger_error("math: illegal characters", E_USER_WARNING);
--- a/libs/plugins/modifier.capitalize.php
+++ b/libs/plugins/modifier.capitalize.php
@@ -22,6 +22,8 @@
 */
 function smarty_modifier_capitalize($string, $uc_digits = false, $lc_rest = false)
 {
+    $string = (string) $string;
+
    if (Smarty::$_MBSTRING) {
        if ($lc_rest) {
            // uppercase (including hyphenated words)
--- a/libs/plugins/modifier.count.php
+++ b/libs/plugins/modifier.count.php
@@ -0,0 +1,36 @@
+<?php
+/**
+ * Smarty plugin
+ *
+ * @package    Smarty
+ * @subpackage PluginsModifier
+ */
+/**
+ * Smarty count modifier plugin
+ * Type:     modifier
+ * Name:     count
+ * Purpose:  counts all elements in an array or in a Countable object
+ * Input:
+ *          - Countable|array: array or object to count
+ *          - mode: int defaults to 0 for normal count mode, if set to 1 counts recursive
+  *
+ * @param mixed $arrayOrObject  input array/object
+ * @param int $mode       count mode
+ *
+ * @return int
+ */
+function smarty_modifier_count($arrayOrObject, $mode = 0)
+{
+    /*
+     * @see https://www.php.net/count
+     * > Prior to PHP 8.0.0, if the parameter was neither an array nor an object that implements the Countable interface,
+     * > 1 would be returned, unless value was null, in which case 0 would be returned.
+     */
+
+    if ($arrayOrObject instanceof Countable || is_array($arrayOrObject)) {
+        return count($arrayOrObject, (int) $mode);
+    } elseif ($arrayOrObject === null) {
+        return 0;
+    }
+    return 1;
+}
--- a/libs/plugins/modifier.date_format.php
+++ b/libs/plugins/modifier.date_format.php
@@ -79,6 +79,7 @@ function smarty_modifier_date_format($string, $format = null, $default_date = ''
            }
            $format = str_replace($_win_from, $_win_to, $format);
        }
+        // @ to suppress deprecation errors when running in PHP8.1 or higher.
        return @strftime($format, $timestamp);
    } else {
        return date($format, $timestamp);
--- a/libs/plugins/modifier.explode.php
+++ b/libs/plugins/modifier.explode.php
@@ -0,0 +1,25 @@
+<?php
+/**
+ * Smarty plugin
+ *
+ * @package    Smarty
+ * @subpackage PluginsModifier
+ */
+
+/**
+ * Smarty explode modifier plugin
+ * Type:     modifier
+ * Name:     explode
+ * Purpose:  split a string by a string
+ *
+ * @param string   $separator
+ * @param string   $string
+ * @param int|null $limit
+ *
+ * @return array
+ */
+function smarty_modifier_explode($separator, $string, ?int $limit = null)
+{
+    // provide $string default to prevent deprecation errors in PHP >=8.1
+    return explode($separator, $string ?? '', $limit ?? PHP_INT_MAX);
+}
--- a/libs/plugins/modifier.number_format.php
+++ b/libs/plugins/modifier.number_format.php
@@ -0,0 +1,26 @@
+<?php
+/**
+ * Smarty plugin
+ *
+ * @package    Smarty
+ * @subpackage PluginsModifier
+ */
+
+/**
+ * Smarty number_format modifier plugin
+ * Type:     modifier
+ * Name:     number_format
+ * Purpose:  Format a number with grouped thousands
+ *
+ * @param float|null  $num
+ * @param int         $decimals
+ * @param string|null $decimal_separator
+ * @param string|null $thousands_separator
+ *
+ * @return string
+ */
+function smarty_modifier_number_format(?float $num, int $decimals = 0, ?string $decimal_separator = ".", ?string $thousands_separator = ",")
+{
+    // provide $num default to prevent deprecation errors in PHP >=8.1
+    return number_format($num ?? 0.0, $decimals, $decimal_separator, $thousands_separator);
+}
--- a/libs/plugins/modifiercompiler.nl2br.php
+++ b/libs/plugins/modifiercompiler.nl2br.php
@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * Smarty plugin
+ *
+ * @package    Smarty
+ * @subpackage PluginsModifierCompiler
+ */
+/**
+ * Smarty nl2br modifier plugin
+ * Type:     modifier
+ * Name:     nl2br
+ * Purpose:  insert HTML line breaks before all newlines in a string
+ *
+ * @link   https://www.smarty.net/docs/en/language.modifier.nl2br.tpl nl2br (Smarty online manual)
+  *
+ * @param array $params parameters
+ *
+ * @return string with compiled code
+ */
+function smarty_modifiercompiler_nl2br($params) {
+    return 'nl2br((string) ' . $params[0] . ', (bool) ' . ($params[1] ?? true) . ')';
+}
--- a/libs/plugins/modifiercompiler.round.php
+++ b/libs/plugins/modifiercompiler.round.php
@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * Smarty plugin
+ *
+ * @package    Smarty
+ * @subpackage PluginsModifierCompiler
+ */
+/**
+ * Smarty round modifier plugin
+ * Type:     modifier
+ * Name:     round
+ * Purpose:  Returns the rounded value of num to specified precision (number of digits after the decimal point)
+ *
+ * @link   https://www.smarty.net/docs/en/language.modifier.round.tpl round (Smarty online manual)
+  *
+ * @param array $params parameters
+ *
+ * @return string with compiled code
+ */
+function smarty_modifiercompiler_round($params) {
+    return 'round((float) ' . $params[0] . ', (int) ' . ($params[1] ?? 0) . ', (int) ' . ($params[2] ?? PHP_ROUND_HALF_UP) . ')';
+}
--- a/libs/plugins/modifiercompiler.str_repeat.php
+++ b/libs/plugins/modifiercompiler.str_repeat.php
@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * Smarty plugin
+ *
+ * @package    Smarty
+ * @subpackage PluginsModifierCompiler
+ */
+/**
+ * Smarty str_repeat modifier plugin
+ * Type:     modifier
+ * Name:     str_repeat
+ * Purpose:  returns string repeated times times
+ *
+ * @link   https://www.smarty.net/docs/en/language.modifier.str_repeat.tpl str_repeat (Smarty online manual)
+ *
+ * @param array $params parameters
+ *
+ * @return string with compiled code
+ */
+function smarty_modifiercompiler_str_repeat($params) {
+    return 'str_repeat((string) ' . $params[0] . ', (int) ' . $params[1] . ')';
+}
--- a/libs/plugins/modifiercompiler.strip_tags.php
+++ b/libs/plugins/modifiercompiler.strip_tags.php
@@ -21,8 +21,8 @@
 function smarty_modifiercompiler_strip_tags($params)
 {
    if (!isset($params[ 1 ]) || $params[ 1 ] === true || trim($params[ 1 ], '"') === 'true') {
-        return "preg_replace('!<[^>]*?>!', ' ', {$params[0]})";
+        return "preg_replace('!<[^>]*?>!', ' ', {$params[0]} ?: '')";
    } else {
-        return 'strip_tags(' . $params[ 0 ] . ')';
+        return 'strip_tags((string) ' . $params[ 0 ] . ')';
    }
 }
--- a/libs/plugins/modifiercompiler.strlen.php
+++ b/libs/plugins/modifiercompiler.strlen.php
@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * Smarty plugin
+ *
+ * @package    Smarty
+ * @subpackage PluginsModifierCompiler
+ */
+/**
+ * Smarty strlen modifier plugin
+ * Type:     modifier
+ * Name:     strlen
+ * Purpose:  return the length of the given string
+ *
+ * @link   https://www.smarty.net/docs/en/language.modifier.strlen.tpl strlen (Smarty online manual)
+  *
+ * @param array $params parameters
+ *
+ * @return string with compiled code
+ */
+function smarty_modifiercompiler_strlen($params) {
+    return 'strlen((string) ' . $params[0] . ')';
+}
--- a/libs/plugins/modifiercompiler.upper.php
+++ b/libs/plugins/modifiercompiler.upper.php
@@ -22,8 +22,8 @@
 function smarty_modifiercompiler_upper($params)
 {
    if (Smarty::$_MBSTRING) {
-        return 'mb_strtoupper(' . $params[ 0 ] . ', \'' . addslashes(Smarty::$_CHARSET) . '\')';
+        return 'mb_strtoupper(' . $params[ 0 ] . ' ?? \'\', \'' . addslashes(Smarty::$_CHARSET) . '\')';
    }
    // no MBString fallback
-    return 'strtoupper(' . $params[ 0 ] . ')';
+    return 'strtoupper(' . $params[ 0 ] . ' ?? \'\')';
 }
--- a/libs/plugins/shared.mb_str_replace.php
+++ b/libs/plugins/shared.mb_str_replace.php
@@ -62,7 +62,7 @@ if (!function_exists('smarty_mb_str_replace')) {
                $replace = mb_convert_encoding($replace, $current_charset, Smarty::$_CHARSET);
            }

-            $parts = mb_split(preg_quote($search), $subject) ?: array();
+            $parts = mb_split(preg_quote($search), $subject ?? "") ?: array();

            // If original regex encoding was not unicode...
            if(!$reg_is_unicode) {
--- a/libs/sysplugins/smarty_cacheresource.php
+++ b/libs/sysplugins/smarty_cacheresource.php
@@ -205,11 +205,11 @@ abstract class Smarty_CacheResource
        }
        // try sysplugins dir
        if (isset(self::$sysplugins[ $type ])) {
-            $cache_resource_class = 'Smarty_Internal_CacheResource_' . ucfirst($type);
+            $cache_resource_class = 'Smarty_Internal_CacheResource_' . smarty_ucfirst_ascii($type);
            return $smarty->_cache[ 'cacheresource_handlers' ][ $type ] = new $cache_resource_class();
        }
        // try plugins dir
-        $cache_resource_class = 'Smarty_CacheResource_' . ucfirst($type);
+        $cache_resource_class = 'Smarty_CacheResource_' . smarty_ucfirst_ascii($type);
        if ($smarty->loadPlugin($cache_resource_class)) {
            return $smarty->_cache[ 'cacheresource_handlers' ][ $type ] = new $cache_resource_class();
        }
--- a/libs/sysplugins/smarty_cacheresource_keyvaluestore.php
+++ b/libs/sysplugins/smarty_cacheresource_keyvaluestore.php
@@ -244,7 +244,7 @@ abstract class Smarty_CacheResource_KeyValueStore extends Smarty_CacheResource
     */
    protected function sanitize($string)
    {
-        $string = trim($string, '|');
+        $string = trim((string)$string, '|');
        if (!$string) {
            return '';
        }
@@ -428,7 +428,7 @@ abstract class Smarty_CacheResource_KeyValueStore extends Smarty_CacheResource
            $t[] = 'IVK#COMPILE' . $_compile;
        }
        $_name .= '#';
-        $cid = trim($cache_id, '|');
+        $cid = trim((string)$cache_id, '|');
        if (!$cid) {
            return $t;
        }
--- a/libs/sysplugins/smarty_internal_compile_private_foreachsection.php
+++ b/libs/sysplugins/smarty_internal_compile_private_foreachsection.php
@@ -143,7 +143,7 @@ class Smarty_Internal_Compile_Private_ForeachSection extends Smarty_Internal_Com
        foreach ($this->resultOffsets as $key => $offset) {
            foreach ($match[ $offset ] as $m) {
                if (!empty($m)) {
-                    $this->matchResults[ $key ][ strtolower($m) ] = true;
+                    $this->matchResults[ $key ][ smarty_strtolower_ascii($m) ] = true;
                }
            }
        }
@@ -213,12 +213,12 @@ class Smarty_Internal_Compile_Private_ForeachSection extends Smarty_Internal_Com
     */
    public function compileSpecialVariable($args, Smarty_Internal_TemplateCompilerBase $compiler, $parameter)
    {
-        $tag = strtolower(trim($parameter[ 0 ], '"\''));
+        $tag = smarty_strtolower_ascii(trim($parameter[ 0 ], '"\''));
        $name = isset($parameter[ 1 ]) ? $compiler->getId($parameter[ 1 ]) : false;
        if (!$name) {
            $compiler->trigger_template_error("missing or illegal \$smarty.{$tag} name attribute", null, true);
        }
-        $property = isset($parameter[ 2 ]) ? strtolower($compiler->getId($parameter[ 2 ])) : false;
+        $property = isset($parameter[ 2 ]) ? smarty_strtolower_ascii($compiler->getId($parameter[ 2 ])) : false;
        if (!$property || !in_array($property, $this->nameProperties)) {
            $compiler->trigger_template_error("missing or illegal \$smarty.{$tag} property attribute", null, true);
        }
--- a/libs/sysplugins/smarty_internal_compile_private_modifier.php
+++ b/libs/sysplugins/smarty_internal_compile_private_modifier.php
@@ -109,6 +109,9 @@ class Smarty_Internal_Compile_Private_Modifier extends Smarty_Internal_CompileBa
                            if (!is_object($compiler->smarty->security_policy)
                                || $compiler->smarty->security_policy->isTrustedPhpModifier($modifier, $compiler)
                            ) {
+                                trigger_error('Using php-function "' . $modifier . '" as a modifier is deprecated and will be ' .
+                                    'removed in a future release. Use Smarty::registerPlugin to explicitly register ' .
+                                    'a custom modifier.', E_USER_DEPRECATED);
                                $output = "{$modifier}({$params})";
                            }
                            $compiler->known_modifier_type[ $modifier ] = $type;
--- a/libs/sysplugins/smarty_internal_compile_private_special_variable.php
+++ b/libs/sysplugins/smarty_internal_compile_private_special_variable.php
@@ -29,7 +29,7 @@ class Smarty_Internal_Compile_Private_Special_Variable extends Smarty_Internal_C
    public function compile($args, Smarty_Internal_TemplateCompilerBase $compiler, $parameter)
    {
        $_index = preg_split("/\]\[/", substr($parameter, 1, strlen($parameter) - 2));
-        $variable = strtolower($compiler->getId($_index[ 0 ]));
+        $variable = smarty_strtolower_ascii($compiler->getId($_index[ 0 ]));
        if ($variable === false) {
            $compiler->trigger_template_error("special \$Smarty variable name index can not be variable", null, true);
        }
@@ -40,7 +40,7 @@ class Smarty_Internal_Compile_Private_Special_Variable extends Smarty_Internal_C
                case 'foreach':
                case 'section':
                    if (!isset(Smarty_Internal_TemplateCompilerBase::$_tag_objects[ $variable ])) {
-                        $class = 'Smarty_Internal_Compile_' . ucfirst($variable);
+                        $class = 'Smarty_Internal_Compile_' . smarty_ucfirst_ascii($variable);
                        Smarty_Internal_TemplateCompilerBase::$_tag_objects[ $variable ] = new $class;
                    }
                    return Smarty_Internal_TemplateCompilerBase::$_tag_objects[ $variable ]->compileSpecialVariable(
@@ -76,7 +76,7 @@ class Smarty_Internal_Compile_Private_Special_Variable extends Smarty_Internal_C
                        $compiler->trigger_template_error("(secure mode) super globals not permitted");
                        break;
                    }
-                    $compiled_ref = '$_' . strtoupper($variable);
+                    $compiled_ref = '$_' . smarty_strtoupper_ascii($variable);
                    break;
                case 'template':
                    return 'basename($_smarty_tpl->source->filepath)';
--- a/libs/sysplugins/smarty_internal_debug.php
+++ b/libs/sysplugins/smarty_internal_debug.php
@@ -212,7 +212,7 @@ class Smarty_Internal_Debug extends Smarty_Internal_Data
        // copy the working dirs from application
        $debObj->setCompileDir($smarty->getCompileDir());
        // init properties by hand as user may have edited the original Smarty class
-        $debObj->setPluginsDir(is_dir(dirname(__FILE__) . '/../plugins') ? dirname(__FILE__) .
+        $debObj->setPluginsDir(is_dir(__DIR__ . '/../plugins') ? __DIR__ .
                                                                           '/../plugins' : $smarty->getPluginsDir());
        $debObj->force_compile = false;
        $debObj->compile_check = Smarty::COMPILECHECK_ON;
--- a/libs/sysplugins/smarty_internal_extension_handler.php
+++ b/libs/sysplugins/smarty_internal_extension_handler.php
@@ -88,9 +88,8 @@ class Smarty_Internal_Extension_Handler
                        $objType = $data->_objType;
                        $propertyType = false;
                        if (!isset($this->resolvedProperties[ $match[ 0 ] ][ $objType ])) {
-                            $property = isset($this->resolvedProperties[ 'property' ][ $basename ]) ?
-                                $this->resolvedProperties[ 'property' ][ $basename ] :
-                                $property = $this->resolvedProperties[ 'property' ][ $basename ] = strtolower(
+                            $property = $this->resolvedProperties['property'][$basename] ??
+                                $this->resolvedProperties['property'][$basename] = smarty_strtolower_ascii(
                                join(
                                    '_',
                                    preg_split(
@@ -145,7 +144,7 @@ class Smarty_Internal_Extension_Handler
    public function upperCase($name)
    {
        $_name = explode('_', $name);
-        $_name = array_map('ucfirst', $_name);
+        $_name = array_map('smarty_ucfirst_ascii', $_name);
        return implode('_', $_name);
    }

--- a/libs/sysplugins/smarty_internal_method_loadplugin.php
+++ b/libs/sysplugins/smarty_internal_method_loadplugin.php
@@ -40,7 +40,7 @@ class Smarty_Internal_Method_LoadPlugin
            throw new SmartyException("plugin {$plugin_name} is not a valid name format");
        }
        if (!empty($match[ 2 ])) {
-            $file = SMARTY_SYSPLUGINS_DIR . strtolower($plugin_name) . '.php';
+            $file = SMARTY_SYSPLUGINS_DIR . smarty_strtolower_ascii($plugin_name) . '.php';
            if (isset($this->plugin_files[ $file ])) {
                if ($this->plugin_files[ $file ] !== false) {
                    return $this->plugin_files[ $file ];
@@ -60,7 +60,7 @@ class Smarty_Internal_Method_LoadPlugin
        }
        // plugin filename is expected to be: [type].[name].php
        $_plugin_filename = "{$match[1]}.{$match[4]}.php";
-        $_lower_filename = strtolower($_plugin_filename);
+        $_lower_filename = smarty_strtolower_ascii($_plugin_filename);
        if (isset($this->plugin_files)) {
            if (isset($this->plugin_files[ 'plugins_dir' ][ $_lower_filename ])) {
                if (!$smarty->use_include_path || $this->plugin_files[ 'plugins_dir' ][ $_lower_filename ] !== false) {
--- a/libs/sysplugins/smarty_internal_method_mustcompile.php
+++ b/libs/sysplugins/smarty_internal_method_mustcompile.php
@@ -32,7 +32,7 @@ class Smarty_Internal_Method_MustCompile
    {
        if (!$_template->source->exists) {
            if ($_template->_isSubTpl()) {
-                $parent_resource = " in '$_template->parent->template_resource}'";
+                $parent_resource = " in '{$_template->parent->template_resource}'";
            } else {
                $parent_resource = '';
            }
--- a/libs/sysplugins/smarty_internal_template.php
+++ b/libs/sysplugins/smarty_internal_template.php
@@ -358,7 +358,7 @@ class Smarty_Internal_Template extends Smarty_Internal_TemplateBase
        }
        if ($tpl->caching === 9999) {
            if (!isset($tpl->compiled)) {
-                $this->loadCompiled(true);
+                $tpl->loadCompiled(true);
            }
            if ($tpl->compiled->has_nocache_code) {
                $this->cached->hashes[ $tpl->compiled->nocache_hash ] = true;
--- a/libs/sysplugins/smarty_internal_templatebase.php
+++ b/libs/sysplugins/smarty_internal_templatebase.php
@@ -257,7 +257,7 @@ abstract class Smarty_Internal_TemplateBase extends Smarty_Internal_Data
                error_reporting($_smarty_old_error_level);
            }
            return $result;
-        } catch (Exception $e) {
+        } catch (Throwable $e) {
            while (ob_get_level() > $level) {
                ob_end_clean();
            }
--- a/libs/sysplugins/smarty_internal_templatecompilerbase.php
+++ b/libs/sysplugins/smarty_internal_templatecompilerbase.php
@@ -605,7 +605,7 @@ abstract class Smarty_Internal_TemplateCompilerBase
            if (strcasecmp($name, 'isset') === 0 || strcasecmp($name, 'empty') === 0
                || strcasecmp($name, 'array') === 0 || is_callable($name)
            ) {
-                $func_name = strtolower($name);
+                $func_name = smarty_strtolower_ascii($name);

                if ($func_name === 'isset') {
                    if (count($parameter) === 0) {
@@ -765,7 +765,7 @@ abstract class Smarty_Internal_TemplateCompilerBase
        if (!isset(self::$_tag_objects[ $tag ])) {
            // lazy load internal compiler plugin
            $_tag = explode('_', $tag);
-            $_tag = array_map('ucfirst', $_tag);
+            $_tag = array_map('smarty_ucfirst_ascii', $_tag);
            $class_name = 'Smarty_Internal_Compile_' . implode('_', $_tag);
            if (class_exists($class_name)
                && (!isset($this->smarty->security_policy) || $this->smarty->security_policy->isTrustedTag($tag, $this))
--- a/libs/sysplugins/smarty_internal_testinstall.php
+++ b/libs/sysplugins/smarty_internal_testinstall.php
@@ -144,7 +144,7 @@ class Smarty_Internal_TestInstall
        }
        // test if all registered plugins_dir are accessible
        // and if core plugins directory is still registered
-        $_core_plugins_dir = realpath(dirname(__FILE__) . '/../plugins');
+        $_core_plugins_dir = realpath(__DIR__ . '/../plugins');
        $_core_plugins_available = false;
        foreach ($smarty->getPluginsDir() as $plugin_dir) {
            $_plugin_dir = $plugin_dir;
--- a/libs/sysplugins/smarty_resource.php
+++ b/libs/sysplugins/smarty_resource.php
@@ -76,11 +76,11 @@ abstract class Smarty_Resource
        }
        // try sysplugins dir
        if (isset(self::$sysplugins[ $type ])) {
-            $_resource_class = 'Smarty_Internal_Resource_' . ucfirst($type);
+            $_resource_class = 'Smarty_Internal_Resource_' . smarty_ucfirst_ascii($type);
            return $smarty->_cache[ 'resource_handlers' ][ $type ] = new $_resource_class();
        }
        // try plugins dir
-        $_resource_class = 'Smarty_Resource_' . ucfirst($type);
+        $_resource_class = 'Smarty_Resource_' . smarty_ucfirst_ascii($type);
        if ($smarty->loadPlugin($_resource_class)) {
            if (class_exists($_resource_class, false)) {
                return $smarty->_cache[ 'resource_handlers' ][ $type ] = new $_resource_class();
--- a/libs/sysplugins/smarty_resource_custom.php
+++ b/libs/sysplugins/smarty_resource_custom.php
@@ -47,7 +47,7 @@ abstract class Smarty_Resource_Custom extends Smarty_Resource
     */
    public function populate(Smarty_Template_Source $source, Smarty_Internal_Template $_template = null)
    {
-        $source->filepath = $source->type . ':' . substr(preg_replace('/[^A-Za-z0-9.]/', '', $source->name), 0, 25);
+        $source->filepath = $source->type . ':' . $this->generateSafeName($source->name);
        $source->uid = sha1($source->type . ':' . $source->name);
        $mtime = $this->fetchTimestamp($source->name);
        if ($mtime !== null) {
@@ -88,6 +88,17 @@ abstract class Smarty_Resource_Custom extends Smarty_Resource
     */
    public function getBasename(Smarty_Template_Source $source)
    {
-        return basename(substr(preg_replace('/[^A-Za-z0-9.]/', '', $source->name), 0, 25));
+        return basename($this->generateSafeName($source->name));
+    }
+
+    /**
+     * Removes special characters from $name and limits its length to 127 characters.
+     *
+     * @param $name
+     *
+     * @return string
+     */
+    private function generateSafeName($name): string {
+        return substr(preg_replace('/[^A-Za-z0-9._]/', '', (string) $name), 0, 127);
    }
 }
--- a/libs/sysplugins/smarty_security.php
+++ b/libs/sysplugins/smarty_security.php
@@ -104,7 +104,7 @@ class Smarty_Security
     *
     * @var array
     */
-    public $php_modifiers = array('escape', 'count', 'nl2br',);
+    public $php_modifiers = array('escape', 'count', 'sizeof', 'nl2br',);

    /**
     * This is an array of allowed tags.
@@ -327,7 +327,7 @@ class Smarty_Security
     *
     * @param string $modifier_name
     * @param object $compiler compiler object
-     *
+     * @deprecated
     * @return boolean                 true if modifier is trusted
     */
    public function isTrustedPhpModifier($modifier_name, $compiler)
@@ -554,35 +554,6 @@ class Smarty_Security
        throw new SmartyException("URI '{$uri}' not allowed by security setting");
    }

-    /**
-     * Check if directory of file resource is trusted.
-     *
-     * @param string $filepath
-     *
-     * @return boolean         true if directory is trusted
-     * @throws SmartyException if PHP directory is not trusted
-     */
-    public function isTrustedPHPDir($filepath)
-    {
-        if (empty($this->trusted_dir)) {
-            throw new SmartyException("directory '{$filepath}' not allowed by security setting (no trusted_dir specified)");
-        }
-        // check if index is outdated
-        if (!$this->_trusted_dir || $this->_trusted_dir !== $this->trusted_dir) {
-            $this->_php_resource_dir = array();
-            $this->_trusted_dir = $this->trusted_dir;
-            foreach ((array)$this->trusted_dir as $directory) {
-                $directory = $this->smarty->_realpath($directory . '/', true);
-                $this->_php_resource_dir[ $directory ] = true;
-            }
-        }
-        $addPath = $this->_checkDir($filepath, $this->_php_resource_dir);
-        if ($addPath !== false) {
-            $this->_php_resource_dir = array_merge($this->_php_resource_dir, $addPath);
-        }
-        return true;
-    }
-
    /**
     * Remove old directories and its sub folders, add new directories
     *
--- a/phpunit.sh
+++ b/phpunit.sh
@@ -1,2 +0,0 @@
-#! /bin/bash
-vendor/phpunit/phpunit/phpunit
--- a/run-tests-for-all-php-versions.sh
+++ b/run-tests-for-all-php-versions.sh
@@ -0,0 +1,44 @@
+#!/bin/bash
+Help()
+{
+   # Display Help
+   echo "Runs PHPUnit tests for all PHP versions supported by this version of Smarty."
+   echo
+   echo "Syntax: $0 [-e|h]"
+   echo "options:"
+   echo "e     Exclude a group of unit tests, e.g. -e 'slow'"
+   echo "h     Print this Help."
+   echo
+}
+
+Exclude=""
+
+# Get the options
+while getopts ":he:" option; do
+   case $option in
+      e) # Exclude
+        echo $OPTARG
+         Exclude=$OPTARG;;
+      h) # display Help
+         Help
+         exit;;
+     \?) # Invalid option
+         echo "Error: Invalid option"
+         exit;;
+   esac
+done
+
+if [ -z $Exclude ];
+then
+  Entrypoint="./run-tests.sh"
+else
+   Entrypoint="./run-tests.sh $Exclude"
+fi
+
+# Runs tests for all supported PHP versions
+docker-compose run --entrypoint "$Entrypoint" php71 && \
+docker-compose run --entrypoint "$Entrypoint" php72 && \
+docker-compose run --entrypoint "$Entrypoint" php73 && \
+docker-compose run --entrypoint "$Entrypoint" php74 && \
+docker-compose run --entrypoint "$Entrypoint" php80 && \
+docker-compose run --entrypoint "$Entrypoint" php81
--- a/run-tests.sh
+++ b/run-tests.sh
@@ -0,0 +1,13 @@
+#!/bin/sh
+composer update
+
+php -r 'echo "\nPHP version " . phpversion() . ". ";';
+
+if [ -z $1 ];
+then
+  echo "Running all unit tests.\n"
+  php ./vendor/phpunit/phpunit/phpunit
+else
+  echo "Running all unit tests, except tests marked with @group $1.\n"
+  php ./vendor/phpunit/phpunit/phpunit --exclude-group $1
+fi
--- a/tests/Bootstrap.php
+++ b/tests/Bootstrap.php
@@ -6,9 +6,9 @@
 /*
 * Smarty PHPUnit Bootstrap
 */
-require_once dirname(__FILE__) . '/Config.php';
-require_once dirname(__FILE__) . '/../vendor/autoload.php';
-require_once dirname(__FILE__) . '/../libs/bootstrap.php';
+require_once __DIR__ . '/Config.php';
+require_once __DIR__ . '/../vendor/autoload.php';
+require_once __DIR__ . '/../libs/bootstrap.php';

 require_once 'PHPUnit_Smarty.php';
 if (!ini_get('date.timezone')) {
--- a/tests/PHPUnit_Smarty.php
+++ b/tests/PHPUnit_Smarty.php
@@ -128,7 +128,7 @@ class PHPUnit_Smarty extends PHPUnit\Framework\TestCase
                    }
                    $s_dir[ $dir ] = true;
                }
-                $dir = dirname(__FILE__);
+                $dir = __DIR__;
            }
            if (!is_dir($dir . '/templates_c')) {
                mkdir($dir . '/templates_c');
@@ -145,8 +145,8 @@ class PHPUnit_Smarty extends PHPUnit\Framework\TestCase
        // instance Smarty class
        $this->smarty = new Smarty;
        if (individualFolders != 'true') {
-            $this->smarty->setCompileDir(dirname(__FILE__) . '/templates_c');
-            $this->smarty->setCacheDir(dirname(__FILE__) . '/cache');
+            $this->smarty->setCompileDir(__DIR__ . '/templates_c');
+            $this->smarty->setCacheDir(__DIR__ . '/cache');
        }

        $this->getSmartyObj();
@@ -637,10 +637,10 @@ KEY `name` (`name`)
    }

    public static function getSmartyPluginsDir(){
-        if (is_dir(dirname(__FILE__) . '/../smarty/libs/plugins')) {
-            return dirname(__FILE__) . '/../smarty/libs/plugins';
-        } else if(is_dir(dirname(__FILE__) . '/../libs/plugins')) {
-            return dirname(__FILE__) . '/../libs/plugins';
+        if (is_dir(__DIR__ . '/../smarty/libs/plugins')) {
+            return __DIR__ . '/../smarty/libs/plugins';
+        } else if(is_dir(__DIR__ . '/../libs/plugins')) {
+            return __DIR__ . '/../libs/plugins';
        }
    }
    /**
--- a/tests/UnitTests/A_0/PathNormalization/PathNormalizationTest.php
+++ b/tests/UnitTests/A_0/PathNormalization/PathNormalizationTest.php
@@ -17,7 +17,7 @@ class PathNormalizationTest extends PHPUnit_Smarty
     */
    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
    }

    public function testNormalizeToAbsolute() {
--- a/tests/UnitTests/A_0/PathNormalization/PluginDirNormalizationTest.php
+++ b/tests/UnitTests/A_0/PathNormalization/PluginDirNormalizationTest.php
@@ -17,7 +17,7 @@ class PluginNormalizationTest extends PHPUnit_Smarty
     */
    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
    }

    public function testGetPluginsDefaultDir()
--- a/tests/UnitTests/A_0/PathNormalization/TemlateDirNormalizationTest.php
+++ b/tests/UnitTests/A_0/PathNormalization/TemlateDirNormalizationTest.php
@@ -17,7 +17,7 @@ class TemplateNormalizationTest extends PHPUnit_Smarty
     */
    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
    }

    public function testGetTemplateDir()
--- a/tests/UnitTests/A_1/ProtectedFolderVars/ProtectedFolderVarsTest.php
+++ b/tests/UnitTests/A_1/ProtectedFolderVars/ProtectedFolderVarsTest.php
@@ -17,7 +17,7 @@ class ProtectedFolderVarsTest extends PHPUnit_Smarty
     */
    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
    }

    /*
@@ -29,7 +29,7 @@ class ProtectedFolderVarsTest extends PHPUnit_Smarty
        $s = new Smarty();
        $s->template_dir = './foo';
        $d = $s->getTemplateDir();
-        $this->assertEquals(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'foo' . DIRECTORY_SEPARATOR, $d[ 0 ]);
+        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'foo' . DIRECTORY_SEPARATOR, $d[ 0 ]);
    }

    public function testTemplateDirDirectRelativeArray()
@@ -37,8 +37,8 @@ class ProtectedFolderVarsTest extends PHPUnit_Smarty
        $s = new Smarty();
        $s->template_dir = array('./foo', './bar/');
        $d = $s->template_dir;
-        $this->assertEquals(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'foo' . DIRECTORY_SEPARATOR, $d[ 0 ]);
-        $this->assertEquals(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'bar' . DIRECTORY_SEPARATOR, $d[ 1 ]);
+        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'foo' . DIRECTORY_SEPARATOR, $d[ 0 ]);
+        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'bar' . DIRECTORY_SEPARATOR, $d[ 1 ]);
    }

    public function testTemplateDirDirectRelativeArrayAdd()
@@ -47,15 +47,15 @@ class ProtectedFolderVarsTest extends PHPUnit_Smarty
        $s->template_dir = './foo';
        $s->addTemplateDir('./bar/');
        $d = $s->getTemplateDir();
-        $this->assertEquals(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'foo' . DIRECTORY_SEPARATOR, $d[ 0 ]);
-        $this->assertEquals(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'bar' . DIRECTORY_SEPARATOR, $d[ 1 ]);
+        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'foo' . DIRECTORY_SEPARATOR, $d[ 0 ]);
+        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'bar' . DIRECTORY_SEPARATOR, $d[ 1 ]);
    }

    public function testTemplateDirDirectRelativeExtends()
    {
        $s = new FolderT();
        $d = $s->getTemplateDir();
-        $this->assertEquals(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'foo' . DIRECTORY_SEPARATOR, $d[ 0 ]);
+        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'foo' . DIRECTORY_SEPARATOR, $d[ 0 ]);
    }

    public function testTemplateDirDirectRelativeExtends2()
@@ -63,7 +63,7 @@ class ProtectedFolderVarsTest extends PHPUnit_Smarty
        $s = new FolderT();
        $s->template_dir = './bar';
        $d = $s->getTemplateDir();
-        $this->assertEquals(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'bar' . DIRECTORY_SEPARATOR, $d[ 0 ]);
+        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'bar' . DIRECTORY_SEPARATOR, $d[ 0 ]);
    }

    /*
@@ -75,7 +75,7 @@ class ProtectedFolderVarsTest extends PHPUnit_Smarty
        $s = new Smarty();
        $s->config_dir = './foo';
        $d = $s->getConfigDir();
-        $this->assertEquals(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'foo' . DIRECTORY_SEPARATOR, $d[ 0 ]);
+        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'foo' . DIRECTORY_SEPARATOR, $d[ 0 ]);
    }

    public function testConfigDirDirectRelativeArray()
@@ -83,8 +83,8 @@ class ProtectedFolderVarsTest extends PHPUnit_Smarty
        $s = new Smarty();
        $s->config_dir = array('./foo', './bar/');
        $d = $s->config_dir;
-        $this->assertEquals(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'foo' . DIRECTORY_SEPARATOR, $d[ 0 ]);
-        $this->assertEquals(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'bar' . DIRECTORY_SEPARATOR, $d[ 1 ]);
+        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'foo' . DIRECTORY_SEPARATOR, $d[ 0 ]);
+        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'bar' . DIRECTORY_SEPARATOR, $d[ 1 ]);
    }

    public function testConfigDirDirectRelativeArrayAdd()
@@ -93,15 +93,15 @@ class ProtectedFolderVarsTest extends PHPUnit_Smarty
        $s->config_dir = './foo';
        $s->addConfigDir('./bar/');
        $d = $s->getConfigDir();
-        $this->assertEquals(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'foo' . DIRECTORY_SEPARATOR, $d[ 0 ]);
-        $this->assertEquals(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'bar' . DIRECTORY_SEPARATOR, $d[ 1 ]);
+        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'foo' . DIRECTORY_SEPARATOR, $d[ 0 ]);
+        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'bar' . DIRECTORY_SEPARATOR, $d[ 1 ]);
    }

    public function testConfigDirDirectRelativeExtends()
    {
        $s = new FolderT();
        $d = $s->getConfigDir();
-        $this->assertEquals(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'conf' . DIRECTORY_SEPARATOR, $d[ 0 ]);
+        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'conf' . DIRECTORY_SEPARATOR, $d[ 0 ]);
    }

    public function testConfigDirDirectRelativeExtends2()
@@ -109,7 +109,7 @@ class ProtectedFolderVarsTest extends PHPUnit_Smarty
        $s = new FolderT();
        $s->config_dir = './bar';
        $d = $s->getConfigDir();
-        $this->assertEquals(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'bar' . DIRECTORY_SEPARATOR, $d[ 0 ]);
+        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'bar' . DIRECTORY_SEPARATOR, $d[ 0 ]);
    }

    /*
@@ -121,7 +121,7 @@ class ProtectedFolderVarsTest extends PHPUnit_Smarty
        $s = new Smarty();
        $s->plugins_dir = './foo';
        $d = $s->getPluginsDir();
-        $this->assertEquals(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'foo' . DIRECTORY_SEPARATOR, $d[ 0 ]);
+        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'foo' . DIRECTORY_SEPARATOR, $d[ 0 ]);
    }

    public function testPluginDirDirectRelativeArray()
@@ -129,8 +129,8 @@ class ProtectedFolderVarsTest extends PHPUnit_Smarty
        $s = new Smarty();
        $s->plugins_dir = array('./foo', './bar/');
        $d = $s->plugins_dir;
-        $this->assertEquals(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'foo' . DIRECTORY_SEPARATOR, $d[ 0 ]);
-        $this->assertEquals(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'bar' . DIRECTORY_SEPARATOR, $d[ 1 ]);
+        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'foo' . DIRECTORY_SEPARATOR, $d[ 0 ]);
+        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'bar' . DIRECTORY_SEPARATOR, $d[ 1 ]);
    }

    public function testPluginDirDirectRelativeArrayAdd()
@@ -139,15 +139,15 @@ class ProtectedFolderVarsTest extends PHPUnit_Smarty
        $s->plugins_dir = './foo';
        $s->addPluginsDir('./bar/');
        $d = $s->getPluginsDir();
-        $this->assertEquals(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'foo' . DIRECTORY_SEPARATOR, $d[ 0 ]);
-        $this->assertEquals(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'bar' . DIRECTORY_SEPARATOR, $d[ 1 ]);
+        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'foo' . DIRECTORY_SEPARATOR, $d[ 0 ]);
+        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'bar' . DIRECTORY_SEPARATOR, $d[ 1 ]);
    }

    public function testPluginDirDirectRelativeExtends()
    {
        $s = new FolderT();
        $d = $s->getPluginsDir();
-        $this->assertEquals(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'plug' . DIRECTORY_SEPARATOR, $d[ 0 ]);
+        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'plug' . DIRECTORY_SEPARATOR, $d[ 0 ]);
    }

    public function testPluginDirDirectRelativeExtends2()
@@ -155,7 +155,7 @@ class ProtectedFolderVarsTest extends PHPUnit_Smarty
        $s = new FolderT();
        $s->plugins_dir = './bar';
        $d = $s->getPluginsDir();
-        $this->assertEquals(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'bar' . DIRECTORY_SEPARATOR, $d[ 0 ]);
+        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'bar' . DIRECTORY_SEPARATOR, $d[ 0 ]);
    }
    /*
     * compile_dir
@@ -166,14 +166,14 @@ class ProtectedFolderVarsTest extends PHPUnit_Smarty
        $s = new Smarty();
        $s->compile_dir = './foo';
        $d = $s->getCompileDir();
-        $this->assertEquals(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'foo' . DIRECTORY_SEPARATOR, $d);
+        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'foo' . DIRECTORY_SEPARATOR, $d);
    }

    public function testCompileDirDirectRelativeExtends()
    {
        $s = new FolderT();
        $d = $s->getCompileDir();
-        $this->assertEquals(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'comp' . DIRECTORY_SEPARATOR, $d);
+        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'comp' . DIRECTORY_SEPARATOR, $d);
    }

    public function testCompileDirDirectRelativeExtends2()
@@ -181,7 +181,7 @@ class ProtectedFolderVarsTest extends PHPUnit_Smarty
        $s = new FolderT();
        $s->compile_dir = './bar';
        $d = $s->getCompileDir();
-        $this->assertEquals(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'bar' . DIRECTORY_SEPARATOR, $d);
+        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'bar' . DIRECTORY_SEPARATOR, $d);
    }
    /*
     * cache_dir
@@ -192,14 +192,14 @@ class ProtectedFolderVarsTest extends PHPUnit_Smarty
        $s = new Smarty();
        $s->cache_dir = './foo';
        $d = $s->getCacheDir();
-        $this->assertEquals(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'foo' . DIRECTORY_SEPARATOR, $d);
+        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'foo' . DIRECTORY_SEPARATOR, $d);
    }

    public function testCacheDirDirectRelativeExtends()
    {
        $s = new FolderT();
        $d = $s->getCacheDir();
-        $this->assertEquals(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'cache' . DIRECTORY_SEPARATOR, $d);
+        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'cache' . DIRECTORY_SEPARATOR, $d);
    }

    public function testCacheDirDirectRelativeExtends2()
@@ -207,7 +207,7 @@ class ProtectedFolderVarsTest extends PHPUnit_Smarty
        $s = new FolderT();
        $s->cache_dir = './bar';
        $d = $s->getCacheDir();
-        $this->assertEquals(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'bar' . DIRECTORY_SEPARATOR, $d);
+        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'bar' . DIRECTORY_SEPARATOR, $d);
    }
 }

--- a/tests/UnitTests/A_2/UndefinedTemplateVar/UndefinedTemplateVarTest.php
+++ b/tests/UnitTests/A_2/UndefinedTemplateVar/UndefinedTemplateVarTest.php
@@ -15,7 +15,7 @@ class UndefinedTemplateVarTest extends PHPUnit_Smarty
     */
    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
    }

    public function testInit()
--- a/tests/UnitTests/A_Core/AutoEscape/AutoEscapeTest.php
+++ b/tests/UnitTests/A_Core/AutoEscape/AutoEscapeTest.php
@@ -17,7 +17,7 @@ class AutoEscapeTest extends PHPUnit_Smarty
     */
    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
        $this->smarty->setEscapeHtml(true);
    }

--- a/tests/UnitTests/A_Core/Filter/FilterTest.php
+++ b/tests/UnitTests/A_Core/Filter/FilterTest.php
@@ -18,7 +18,7 @@ class FilterTest extends PHPUnit_Smarty

    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
    }

    public function testInit()
--- a/tests/UnitTests/A_Core/Filter/LoadFilterTest.php
+++ b/tests/UnitTests/A_Core/Filter/LoadFilterTest.php
@@ -17,7 +17,7 @@ class LoadFilterTest extends PHPUnit_Smarty
 {
    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
    }

    /**
--- a/tests/UnitTests/A_Core/Filter/RegisterFilterTest.php
+++ b/tests/UnitTests/A_Core/Filter/RegisterFilterTest.php
@@ -17,7 +17,7 @@ class RegisterFilterTest extends PHPUnit_Smarty
 {
    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
    }

    /**
--- a/tests/UnitTests/A_Core/GetterSetter/GetterSetterTest.php
+++ b/tests/UnitTests/A_Core/GetterSetter/GetterSetterTest.php
@@ -17,7 +17,7 @@ class GetterSetterTest extends PHPUnit_Smarty
 {
     public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
    }

    public function testInit()
--- a/tests/UnitTests/A_Core/LoadPlugin/DefaultPluginHandlerTest.php
+++ b/tests/UnitTests/A_Core/LoadPlugin/DefaultPluginHandlerTest.php
@@ -17,7 +17,7 @@ class DefaultPluginHandlerTest extends PHPUnit_Smarty
 {
    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
        $this->smarty->setForceCompile(true);
        $this->smarty->disableSecurity();
        $this->smarty->registerDefaultPluginHandler('my_plugin_handler');
--- a/tests/UnitTests/A_Core/LoadPlugin/IncludePathTest.php
+++ b/tests/UnitTests/A_Core/LoadPlugin/IncludePathTest.php
@@ -13,12 +13,12 @@ class IncludePathTest extends PHPUnit_Smarty
 {
    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
        $this->smarty->use_include_path = true;
        $this->smarty->setPluginsDir(array('./include','./include1'));
        $this->smarty->enableSecurity();
        $ds = DIRECTORY_SEPARATOR;
-        set_include_path($this->smarty->_realpath(dirname(__FILE__) . "{$ds}..{$ds}..{$ds}..{$ds}Include_Path{$ds}Plugins{$ds}", true) . PATH_SEPARATOR . get_include_path());
+        set_include_path($this->smarty->_realpath(__DIR__ . "{$ds}..{$ds}..{$ds}..{$ds}Include_Path{$ds}Plugins{$ds}", true) . PATH_SEPARATOR . get_include_path());
    }

    /**
--- a/tests/UnitTests/A_Core/LoadPlugin/LoadPluginTest.php
+++ b/tests/UnitTests/A_Core/LoadPlugin/LoadPluginTest.php
@@ -17,7 +17,7 @@ class LoadPluginTest extends PHPUnit_Smarty
 {
    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
    }

    /**
--- a/tests/UnitTests/A_Core/PluginTests/PluginChainedLoadTest.php
+++ b/tests/UnitTests/A_Core/PluginTests/PluginChainedLoadTest.php
@@ -17,7 +17,7 @@ class PluginChainedLoadTest extends PHPUnit_Smarty
 {
    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
    }

    public function testInit()
@@ -27,7 +27,7 @@ class PluginChainedLoadTest extends PHPUnit_Smarty

    public function testPluginChainedLoad()
    {
-        $this->smarty->addPluginsDir(dirname(__FILE__) . "/PHPunitplugins/");
+        $this->smarty->addPluginsDir(__DIR__ . "/PHPunitplugins/");
        $this->assertStringContainsString('from chain3', $this->smarty->fetch('test_plugin_chained_load.tpl'));
    }
 }
--- a/tests/UnitTests/A_Core/PluginTests/Shared/SharedFunctionsTest.php
+++ b/tests/UnitTests/A_Core/PluginTests/Shared/SharedFunctionsTest.php
@@ -13,7 +13,7 @@ class SharedFunctionsTest extends PHPUnit_Smarty
 {
    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
    }

    /**
--- a/tests/UnitTests/CacheModify/ModifiedSince/HttpModifiedSinceTest.php
+++ b/tests/UnitTests/CacheModify/ModifiedSince/HttpModifiedSinceTest.php
@@ -18,7 +18,7 @@ class HttpModifiedSinceTest extends PHPUnit_Smarty

    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
     }

    public function testInit()
--- a/tests/UnitTests/CacheResourceTests/Apc/CacheResourceCustomApcTest.php
+++ b/tests/UnitTests/CacheResourceTests/Apc/CacheResourceCustomApcTest.php
@@ -5,7 +5,7 @@
 * @package PHPunit
 * @author  Uwe Tews
 */
-include_once dirname(__FILE__) . '/../Memcache/CacheResourceCustomMemcacheTest.php';
+include_once __DIR__ . '/../Memcache/CacheResourceCustomMemcacheTest.php';

 /**
 * class for cache resource file tests
@@ -21,7 +21,7 @@ class CacheResourceCustomApcTest extends CacheResourceCustomMemcacheTest
        if (!function_exists('apc_cache_info') || ini_get('apc.enable_cli')) {
            $this->markTestSkipped('APC cache not available');
        }
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
        parent::setUp();
        $this->smarty->setCachingType('apc');
        $this->smarty->addPluginsDir(SMARTY_DIR . '../demo/plugins/');
--- a/tests/UnitTests/CacheResourceTests/File/CacheResourceFileTest.php
+++ b/tests/UnitTests/CacheResourceTests/File/CacheResourceFileTest.php
@@ -6,7 +6,7 @@
 * @author  Uwe Tews
 */

-include_once dirname(__FILE__) . '/../_shared/CacheResourceTestCommon.php';
+include_once __DIR__ . '/../_shared/CacheResourceTestCommon.php';

 /**
 * class for cache resource file tests
@@ -20,7 +20,7 @@ class CacheResourceFileTest extends CacheResourceTestCommon

    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
        parent::setUp();
        $this->smarty->setCachingType('filetest');
    }
--- a/tests/UnitTests/CacheResourceTests/Memcache/CacheResourceCustomMemcacheTest.php
+++ b/tests/UnitTests/CacheResourceTests/Memcache/CacheResourceCustomMemcacheTest.php
@@ -6,7 +6,7 @@
 * @author  Uwe Tews
 */

-include_once dirname(__FILE__) . '/../_shared/CacheResourceTestCommon.php';
+include_once __DIR__ . '/../_shared/CacheResourceTestCommon.php';

 /**
 * class for cache resource memcache tests
@@ -27,7 +27,7 @@ class CacheResourceCustomMemcacheTest extends CacheResourceTestCommon
        if (!class_exists('Memcache')) {
            $this->markTestSkipped('Memcache not available');
        }
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
        parent::setUp();
        $this->smarty->setCachingType('memcachetest');
    }
--- a/tests/UnitTests/CacheResourceTests/Mysql/CacheResourceCustomMysqlTest.php
+++ b/tests/UnitTests/CacheResourceTests/Mysql/CacheResourceCustomMysqlTest.php
@@ -7,7 +7,7 @@
 */
 if (MysqlCacheEnable == true) {

-    include_once dirname(__FILE__) . '/../_shared/CacheResourceTestCommon.php';
+    include_once __DIR__ . '/../_shared/CacheResourceTestCommon.php';

    /**
     * class for cache resource file tests
@@ -28,7 +28,7 @@ if (MysqlCacheEnable == true) {
            if (self::$init) {
                $this->getConnection();
            }
-            $this->setUpSmarty(dirname(__FILE__));
+            $this->setUpSmarty(__DIR__);
            parent::setUp();
            $this->smarty->setCachingType('mysqltest');
        }
--- a/tests/UnitTests/CacheResourceTests/PDO/CacheResourceCustomPDOTest.php
+++ b/tests/UnitTests/CacheResourceTests/PDO/CacheResourceCustomPDOTest.php
@@ -7,7 +7,7 @@
 */
 if (PdoCacheEnable == true) {

-    include_once dirname(__FILE__) . '/../_shared/CacheResourceTestCommon.php';
+    include_once __DIR__ . '/../_shared/CacheResourceTestCommon.php';

    /**
     * class for cache resource file tests
@@ -27,7 +27,7 @@ if (PdoCacheEnable == true) {
            if (self::$init) {
                $this->getConnection();
            }
-            $this->setUpSmarty(dirname(__FILE__));
+            $this->setUpSmarty(__DIR__);
            parent::setUp();
            $this->smarty->setCachingType('pdo');
            $this->smarty->addPluginsDir(SMARTY_DIR . '../demo/plugins/');
--- a/tests/UnitTests/CacheResourceTests/PDOgzip/CacheResourceCustomPDOGzipTest.php
+++ b/tests/UnitTests/CacheResourceTests/PDOgzip/CacheResourceCustomPDOGzipTest.php
@@ -7,7 +7,7 @@
 */
 if (PdoGzipCacheEnable == true) {

-    include_once dirname(__FILE__) . '/../_shared/CacheResourceTestCommon.php';
+    include_once __DIR__ . '/../_shared/CacheResourceTestCommon.php';

    /**
     * class for cache resource file tests
@@ -25,7 +25,7 @@ if (PdoGzipCacheEnable == true) {
            if (self::$init) {
                $this->getConnection();
            }
-            $this->setUpSmarty(dirname(__FILE__));
+            $this->setUpSmarty(__DIR__);
            parent::setUp();
            $this->smarty->setCachingType('pdo');
            $this->smarty->addPluginsDir(SMARTY_DIR . '../demo/plugins/');
--- a/tests/UnitTests/CacheResourceTests/Registered/CacheResourceCustomRegisteredTest.php
+++ b/tests/UnitTests/CacheResourceTests/Registered/CacheResourceCustomRegisteredTest.php
@@ -6,7 +6,7 @@
 * @author  Uwe Tews
 */
 if (MysqlCacheEnable == true) {
-    include_once dirname(__FILE__) . '/../_shared/CacheResourceTestCommon.php';
+    include_once __DIR__ . '/../_shared/CacheResourceTestCommon.php';

    /**
     * class for cache resource file tests
@@ -25,10 +25,10 @@ if (MysqlCacheEnable == true) {
            if (self::$init) {
                $this->getConnection();
            }
-            $this->setUpSmarty(dirname(__FILE__));
+            $this->setUpSmarty(__DIR__);
            parent::setUp();
            if (!class_exists('Smarty_CacheResource_Mysqltest', false)) {
-                require_once(dirname(__FILE__) . "/../_shared/PHPunitplugins/cacheresource.mysqltest.php");
+                require_once(__DIR__ . "/../_shared/PHPunitplugins/cacheresource.mysqltest.php");
            }
            $this->smarty->setCachingType('foobar');
            $this->smarty->registerCacheResource('foobar', new Smarty_CacheResource_Mysqltest());
--- a/tests/UnitTests/CacheResourceTests/_shared/CacheResourceTestCommon.php
+++ b/tests/UnitTests/CacheResourceTests/_shared/CacheResourceTestCommon.php
@@ -17,8 +17,8 @@ class CacheResourceTestCommon extends PHPUnit_Smarty

    public function setUp(): void
    {
-        $this->smarty->setTemplateDir(dirname(__FILE__) . '/templates');
-        $this->smarty->addPluginsDir(dirname(__FILE__) . '/PHPunitplugins');
+        $this->smarty->setTemplateDir(__DIR__ . '/templates');
+        $this->smarty->addPluginsDir(__DIR__ . '/PHPunitplugins');
        $this->smarty->registerFilter('pre', array($this, 'compiledPrefilter'));
    }

@@ -543,9 +543,9 @@ class CacheResourceTestCommon extends PHPUnit_Smarty
    {
        $this->smarty->setCaching(true);
        if ($folder == 0) {
-            $this->smarty->setTemplateDir(array(dirname(__FILE__) . '/../_shared/templates', dirname(__FILE__) . '/../_shared/templates/a'));
+            $this->smarty->setTemplateDir(array(__DIR__ . '/../_shared/templates', __DIR__ . '/../_shared/templates/a'));
        } else {
-            $this->smarty->setTemplateDir(array(dirname(__FILE__) . '/../_shared/templates', dirname(__FILE__) . '/../_shared/templates/b'));
+            $this->smarty->setTemplateDir(array(__DIR__ . '/../_shared/templates', __DIR__ . '/../_shared/templates/b'));
        }
        if ($merge) {
            $this->smarty->setCompileId(1);
--- a/tests/UnitTests/Compiler/CompilerPlugin/CompileCompilerPluginTest.php
+++ b/tests/UnitTests/Compiler/CompilerPlugin/CompileCompilerPluginTest.php
@@ -17,7 +17,7 @@ class CompileCompilerPluginTest extends PHPUnit_Smarty
 {
     public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
    }

    public function testInit()
--- a/tests/UnitTests/Compiler/Delimiter/AutoLiteralTest.php
+++ b/tests/UnitTests/Compiler/Delimiter/AutoLiteralTest.php
@@ -16,7 +16,7 @@ class AutoliteralTest extends PHPUnit_Smarty
 {
    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
        $this->smarty->addPluginsDir("../../__shared/PHPunitplugins/");
    }

--- a/tests/UnitTests/Compiler/Delimiter/DelimiterTest.php
+++ b/tests/UnitTests/Compiler/Delimiter/DelimiterTest.php
@@ -17,7 +17,7 @@ class DelimiterTest extends PHPUnit_Smarty
 {
    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
    }

    public function testInit()
--- a/tests/UnitTests/Compiler/Delimiter/UserLiteralTest.php
+++ b/tests/UnitTests/Compiler/Delimiter/UserLiteralTest.php
@@ -20,7 +20,7 @@ class UserliteralTest extends PHPUnit_Smarty
        if (!property_exists('Smarty', 'literals')) {
            $this->markTestSkipped('user literal support');
        } else {
-            $this->setUpSmarty(dirname(__FILE__));
+            $this->setUpSmarty(__DIR__);
        }
    }

--- a/tests/UnitTests/ConfigFileTests/defaultHandler/DefaultConfigHandlerTest.php
+++ b/tests/UnitTests/ConfigFileTests/defaultHandler/DefaultConfigHandlerTest.php
@@ -23,7 +23,7 @@ class DefaultConfigHandlerTest extends PHPUnit_Smarty
     */
    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
        $this->smarty->setForceCompile(true);
    }

--- a/tests/UnitTests/ConfigFileTests/file/ConfigVarTest.php
+++ b/tests/UnitTests/ConfigFileTests/file/ConfigVarTest.php
@@ -22,7 +22,7 @@ class ConfigVarTest extends PHPUnit_Smarty
     */
    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
    }

    /**
@@ -387,7 +387,7 @@ class ConfigVarTest extends PHPUnit_Smarty

    public function testConfigResourceDb4()
    {
-        $this->smarty->addPluginsDir(dirname(__FILE__) . "/PHPunitplugins/");
+        $this->smarty->addPluginsDir(__DIR__ . "/PHPunitplugins/");
        $this->smarty->configLoad('db4:foo.conf');
        $this->assertEquals("bar", $this->smarty->fetch('foo.tpl'));
    }
--- a/tests/UnitTests/ResourceTests/Custom/Ambiguous/CustomResourceAmbiguousTest.php
+++ b/tests/UnitTests/ResourceTests/Custom/Ambiguous/CustomResourceAmbiguousTest.php
@@ -19,8 +19,8 @@ class CustomResourceAmbiguousTest extends PHPUnit_Smarty

    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
-        require_once dirname(__FILE__) . '/PHPunitplugins/resource.ambiguous.php';
+        $this->setUpSmarty(__DIR__);
+        require_once __DIR__ . '/PHPunitplugins/resource.ambiguous.php';

        // empty the template dir
        $this->smarty->setTemplateDir(array());
@@ -36,7 +36,7 @@ class CustomResourceAmbiguousTest extends PHPUnit_Smarty

    protected function relative($path)
    {
-        $path = str_replace(dirname(__FILE__), '.', $path);
+        $path = str_replace(__DIR__, '.', $path);
        if (DIRECTORY_SEPARATOR == "\\") {
            $path = str_replace("\\", "/", $path);
        }
@@ -46,7 +46,7 @@ class CustomResourceAmbiguousTest extends PHPUnit_Smarty

    public function testNone()
    {
-        $resource_handler = new Smarty_Resource_Ambiguous(dirname(__FILE__) . '/templates/ambiguous/');
+        $resource_handler = new Smarty_Resource_Ambiguous(__DIR__ . '/templates/ambiguous/');
        $this->smarty->registerResource('ambiguous', $resource_handler);
        $this->smarty->setDefaultResourceType('ambiguous');
        $this->smarty->setAllowAmbiguousResources(true);
@@ -63,7 +63,7 @@ class CustomResourceAmbiguousTest extends PHPUnit_Smarty
     */
    public function testCase1()
    {
-        $resource_handler = new Smarty_Resource_Ambiguous(dirname(__FILE__) . '/templates/ambiguous/');
+        $resource_handler = new Smarty_Resource_Ambiguous(__DIR__ . '/templates/ambiguous/');
        $this->smarty->registerResource('ambiguous', $resource_handler);
        $this->smarty->setDefaultResourceType('ambiguous');
        $this->smarty->setAllowAmbiguousResources(true);
@@ -83,7 +83,7 @@ class CustomResourceAmbiguousTest extends PHPUnit_Smarty
     */
    public function testCase2()
    {
-        $resource_handler = new Smarty_Resource_Ambiguous(dirname(__FILE__) . '/templates/ambiguous/');
+        $resource_handler = new Smarty_Resource_Ambiguous(__DIR__ . '/templates/ambiguous/');
        $this->smarty->registerResource('ambiguous', $resource_handler);
        $this->smarty->setDefaultResourceType('ambiguous');
        $this->smarty->setAllowAmbiguousResources(true);
@@ -103,7 +103,7 @@ class CustomResourceAmbiguousTest extends PHPUnit_Smarty
     */
    public function testCaseSwitching()
    {
-        $resource_handler = new Smarty_Resource_Ambiguous(dirname(__FILE__) . '/templates/ambiguous/');
+        $resource_handler = new Smarty_Resource_Ambiguous(__DIR__ . '/templates/ambiguous/');
        $this->smarty->registerResource('ambiguous', $resource_handler);
        $this->smarty->setDefaultResourceType('ambiguous');
        $this->smarty->setAllowAmbiguousResources(true);
--- a/tests/UnitTests/ResourceTests/Custom/DemoPluginExtendsAll/ResourceExtendsAllPluginTest.php
+++ b/tests/UnitTests/ResourceTests/Custom/DemoPluginExtendsAll/ResourceExtendsAllPluginTest.php
@@ -17,7 +17,7 @@ class ResourceExtendsAllPluginTest extends PHPUnit_Smarty
 {
    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
    }

    public function testInit()
--- a/tests/UnitTests/ResourceTests/Custom/DemoPluginMysql/ResourceMysqlPluginTest.php
+++ b/tests/UnitTests/ResourceTests/Custom/DemoPluginMysql/ResourceMysqlPluginTest.php
@@ -23,7 +23,7 @@ if (MysqlResourceEnable == true) {
                if (self::$init) {
                $this->getConnection();
            }
-            $this->setUpSmarty(dirname(__FILE__));
+            $this->setUpSmarty(__DIR__);
            $this->smarty->addPluginsDir("./PHPunitplugins/");
        }

--- a/tests/UnitTests/ResourceTests/DefaultHandler/DefaultTemplateHandlerTest.php
+++ b/tests/UnitTests/ResourceTests/DefaultHandler/DefaultTemplateHandlerTest.php
@@ -17,7 +17,7 @@ class DefaultTemplateHandlerTest extends PHPUnit_Smarty
 {
    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
        $this->smarty->setForceCompile(true);
        $this->smarty->disableSecurity();
    }
--- a/tests/UnitTests/ResourceTests/Eval/EvalResourceTest.php
+++ b/tests/UnitTests/ResourceTests/Eval/EvalResourceTest.php
@@ -17,7 +17,7 @@ class EvalResourceTest extends PHPUnit_Smarty
 {
   public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
    }


--- a/tests/UnitTests/ResourceTests/Extends/ExtendsResourceTest.php
+++ b/tests/UnitTests/ResourceTests/Extends/ExtendsResourceTest.php
@@ -17,7 +17,7 @@ class ExtendsResourceTest extends PHPUnit_Smarty
 {
    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
        $this->smarty->enableSecurity();
    }

--- a/tests/UnitTests/ResourceTests/File/FileResourceTest.php
+++ b/tests/UnitTests/ResourceTests/File/FileResourceTest.php
@@ -17,7 +17,7 @@ class FileResourceTest extends PHPUnit_Smarty
 {
    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
        $this->smarty->enableSecurity();
    }

@@ -28,7 +28,7 @@ class FileResourceTest extends PHPUnit_Smarty

    protected function relative($path)
    {
-        $path = str_replace(str_replace("\\", "/", dirname(__FILE__)), '.', str_replace("\\", "/", $path));
+        $path = str_replace(str_replace("\\", "/", __DIR__), '.', str_replace("\\", "/", $path));

        return $path;
    }
@@ -249,8 +249,8 @@ class FileResourceTest extends PHPUnit_Smarty
    public function testRelativeFetch()
    {
        $this->smarty->setTemplateDir(array(
-                                          dirname(__FILE__) . '/does-not-exist/',
-                                          dirname(__FILE__) . '/templates/sub/',
+                                          __DIR__ . '/does-not-exist/',
+                                          __DIR__ . '/templates/sub/',
                                      ));
        $this->smarty->security_policy = null;
        $this->assertEquals('hello world', $this->smarty->fetch('./relative.tpl'));
@@ -265,8 +265,8 @@ class FileResourceTest extends PHPUnit_Smarty
    public function testRelativeFetch2()
    {
         $this->smarty->setTemplateDir(array(
-                                          dirname(__FILE__) . '/does-not-exist/',
-                                          dirname(__FILE__) . '/templates/sub/',
+                                          __DIR__ . '/does-not-exist/',
+                                          __DIR__ . '/templates/sub/',
                                      ));
        $this->smarty->security_policy = null;
        $this->assertEquals('hello world', $this->smarty->fetch('../helloworld.tpl'));
@@ -281,12 +281,12 @@ class FileResourceTest extends PHPUnit_Smarty
    public function testRelativeFetchCwd()
    {
        $cwd = getcwd();
-        chdir(dirname(__FILE__) . '/templates/sub/');
-        $dn = dirname(__FILE__);
+        chdir(__DIR__ . '/templates/sub/');
+        $dn = __DIR__;
        $this->smarty->setCompileDir($dn . '/templates_c/');
        $this->smarty->setCacheDir($dn . '/cache/');
        $this->smarty->setTemplateDir(array(
-                                          dirname(__FILE__) . '/does-not-exist/',
+                                          __DIR__ . '/does-not-exist/',
                                      ));
        $this->smarty->security_policy = null;
        $this->assertEquals('hello world', $this->smarty->fetch('./relative.tpl'));
@@ -302,12 +302,12 @@ class FileResourceTest extends PHPUnit_Smarty
    public function testRelativeFetchCwd2()
    {
        $cwd = getcwd();
-        chdir(dirname(__FILE__) . '/templates/sub/');
-        $dn = dirname(__FILE__);
+        chdir(__DIR__ . '/templates/sub/');
+        $dn = __DIR__;
        $this->smarty->setCompileDir($dn . '/templates_c/');
        $this->smarty->setCacheDir($dn . '/cache/');
        $this->smarty->setTemplateDir(array(
-                                          dirname(__FILE__) . '/does-not-exist/',
+                                          __DIR__ . '/does-not-exist/',
                                      ));
        $this->smarty->security_policy = null;
        $this->assertEquals('hello world', $this->smarty->fetch('../helloworld.tpl'));
@@ -359,7 +359,7 @@ class FileResourceTest extends PHPUnit_Smarty
        $this->smarty->security_policy = null;

        $cwd = getcwd();
-        $dn = dirname(__FILE__);
+        $dn = __DIR__;
        $this->smarty->setCompileDir($dn . '/templates_c/');
        $this->smarty->setCacheDir($dn . '/cache/');
        $this->smarty->setTemplateDir(array($dn . '/templates/relativity/theory/',));
@@ -378,7 +378,7 @@ class FileResourceTest extends PHPUnit_Smarty
        $this->smarty->security_policy = null;

        $cwd = getcwd();
-        $dn = dirname(__FILE__);
+        $dn = __DIR__;
        $this->smarty->setCompileDir($dn . '/templates_c/');
        $this->smarty->setCacheDir($dn . '/cache/');

@@ -409,7 +409,7 @@ class FileResourceTest extends PHPUnit_Smarty
        $this->smarty->security_policy = null;

        $cwd = getcwd();
-        $dn = dirname(__FILE__);
+        $dn = __DIR__;

        $this->smarty->setCompileDir($dn . '/templates_c/');
        $this->smarty->setCacheDir($dn . '/cache/');
@@ -438,7 +438,7 @@ class FileResourceTest extends PHPUnit_Smarty
        $this->smarty->security_policy = null;

        $cwd = getcwd();
-        $dn = dirname(__FILE__);
+        $dn = __DIR__;

        $this->smarty->setCompileDir($dn . '/templates_c/');
        $this->smarty->setCacheDir($dn . '/cache/');
@@ -458,7 +458,7 @@ class FileResourceTest extends PHPUnit_Smarty
        $this->smarty->security_policy = null;

        $cwd = getcwd();
-        $dn = dirname(__FILE__);
+        $dn = __DIR__;

        $this->smarty->setCompileDir($dn . '/templates_c/');
        $this->smarty->setCacheDir($dn . '/cache/');
@@ -489,7 +489,7 @@ class FileResourceTest extends PHPUnit_Smarty
        $this->smarty->security_policy = null;

        $cwd = getcwd();
-        $dn = dirname(__FILE__);
+        $dn = __DIR__;

        $this->smarty->setCompileDir($dn . '/templates_c/');
        $this->smarty->setCacheDir($dn . '/cache/');
@@ -507,7 +507,7 @@ class FileResourceTest extends PHPUnit_Smarty
        $this->smarty->security_policy = null;

        $cwd = getcwd();
-        $dn = dirname(__FILE__);
+        $dn = __DIR__;

        $this->smarty->setCompileDir($dn . '/templates_c/');
        $this->smarty->setCacheDir($dn . '/cache/');
@@ -526,7 +526,7 @@ class FileResourceTest extends PHPUnit_Smarty
        $this->smarty->security_policy = null;

        $cwd = getcwd();
-        $dn = dirname(__FILE__);
+        $dn = __DIR__;

        $this->smarty->setCompileDir($dn . '/templates_c/');
        $this->smarty->setCacheDir($dn . '/cache/');
@@ -560,7 +560,7 @@ class FileResourceTest extends PHPUnit_Smarty
        $this->smarty->security_policy = null;

        $cwd = getcwd();
-        $dn = dirname(__FILE__);
+        $dn = __DIR__;
        $this->smarty->setCompileDir($dn . '/templates_c/');
        $this->smarty->setCacheDir($dn . '/cache/');
        $this->smarty->setTemplateDir(array(
@@ -599,7 +599,7 @@ class FileResourceTest extends PHPUnit_Smarty
     *
     */
    public function testSmartyCurrentDir() {
-        $dirname = dirname(__FILE__) . DIRECTORY_SEPARATOR . 'templates';
+        $dirname = __DIR__ . DIRECTORY_SEPARATOR . 'templates';
        $this->assertEquals('current_dir = ' . $dirname, $this->smarty->fetch('001_smarty_current_dir.tpl'));
    }
 }
--- a/tests/UnitTests/ResourceTests/FileIncludePath/FileIncludePathTest.php
+++ b/tests/UnitTests/ResourceTests/FileIncludePath/FileIncludePathTest.php
@@ -13,12 +13,12 @@ class FileIncludePathTest extends PHPUnit_Smarty
 {
    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
        $this->smarty->use_include_path = true;
        $this->smarty->setTemplateDir(array('./templates', './templates_2', './include'));
        $this->smarty->enableSecurity();
        $ds = DIRECTORY_SEPARATOR;
-        set_include_path($this->smarty->_realpath(dirname(__FILE__) . "{$ds}..{$ds}..{$ds}..{$ds}Include_Path{$ds}Tpl{$ds}", true) . PATH_SEPARATOR . get_include_path());
+        set_include_path($this->smarty->_realpath(__DIR__ . "{$ds}..{$ds}..{$ds}..{$ds}Include_Path{$ds}Tpl{$ds}", true) . PATH_SEPARATOR . get_include_path());
    }

    /**
--- a/tests/UnitTests/ResourceTests/FileIndexed/FileResourceIndexedTest.php
+++ b/tests/UnitTests/ResourceTests/FileIndexed/FileResourceIndexedTest.php
@@ -13,11 +13,11 @@ class FileResourceIndexedTest extends PHPUnit_Smarty
 {
    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
-        $this->smarty->addTemplateDir(dirname(__FILE__) . '/templates_2');
+        $this->setUpSmarty(__DIR__);
+        $this->smarty->addTemplateDir(__DIR__ . '/templates_2');
        // note that 10 is a string!
-        $this->smarty->addTemplateDir(dirname(__FILE__) . '/templates_3', '10');
-        $this->smarty->addTemplateDir(dirname(__FILE__) . '/templates_4', 'foo');
+        $this->smarty->addTemplateDir(__DIR__ . '/templates_3', '10');
+        $this->smarty->addTemplateDir(__DIR__ . '/templates_4', 'foo');
     }

    public function testInit()
--- a/tests/UnitTests/ResourceTests/Php/PhpResourceTest.php
+++ b/tests/UnitTests/ResourceTests/Php/PhpResourceTest.php
@@ -17,7 +17,7 @@ class PhpResourceTest extends PHPUnit_Smarty
 {
    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);
    }

    public function testInit()
@@ -27,7 +27,7 @@ class PhpResourceTest extends PHPUnit_Smarty

    protected function relative($path)
    {
-        $path = str_replace(str_replace("\\", "/", dirname(__FILE__)), '.', str_replace("\\", "/", $path));
+        $path = str_replace(str_replace("\\", "/", __DIR__), '.', str_replace("\\", "/", $path));

        return $path;
    }
--- a/tests/UnitTests/ResourceTests/Registered/RegisteredResourceTest.php
+++ b/tests/UnitTests/ResourceTests/Registered/RegisteredResourceTest.php
@@ -18,7 +18,7 @@ class RegisteredResourceTest extends PHPUnit_Smarty

    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);

        $this->smarty->registerResource("rr", new RegisteredResourceTest_Resource1());
    }
--- a/tests/UnitTests/ResourceTests/ResourcePlugins/ResourcePluginTest.php
+++ b/tests/UnitTests/ResourceTests/ResourcePlugins/ResourcePluginTest.php
@@ -17,7 +17,7 @@ class ResourcePluginTest extends PHPUnit_Smarty
 {
    public function setUp(): void
    {
-          $this->setUpSmarty(dirname(__FILE__));
+          $this->setUpSmarty(__DIR__);
    }

    public function testInit()
--- a/tests/UnitTests/ResourceTests/Stream/StreamResourceTest.php
+++ b/tests/UnitTests/ResourceTests/Stream/StreamResourceTest.php
@@ -17,7 +17,7 @@ class StreamResourceTest extends PHPUnit_Smarty
 {
    public function setUp(): void
    {
-        $this->setUpSmarty(dirname(__FILE__));
+        $this->setUpSmarty(__DIR__);

        $this->smarty->assign('foo', 'bar');
        stream_wrapper_register("global", "ResourceStream")
--- a/Show More
+++ b/Show More