Merge branch 'release/5.5.2'

* Add support for modifiercompiler in the BCPluginsAdapter class.

---------

Co-authored-by: Anne Zijlstra <a.zijlstra@iwink.nl>

.github/FUNDING.yml

@@ -0,0 +1 @@
+github: [wisskid]

.github/workflows/ci.yml

@@ -33,32 +33,15 @@ jobs:
           - "8.1"
           - "8.2"
           - "8.3"
+          - "8.4"
 
         compiler:
           - default
 
-        include:
-          - os: ubuntu-latest
-            php-version: "8.0"
-            compiler: jit
-          - os: ubuntu-latest
-            php-version: "8.1"
-            compiler: jit
-          - os: ubuntu-latest
-            php-version: "8.2"
-            compiler: jit
-          - os: ubuntu-latest
-            php-version: "8.3"
-            compiler: jit
-
     steps:
     - name: Checkout
       uses: actions/checkout@v4
 
-    - name: Override PHP ini values for JIT compiler
-      if: matrix.compiler == 'jit'
-      run: echo "PHP_INI_VALUES::assert.exception=1, zend.assertions=1, opcache.enable=1, opcache.enable_cli=1, opcache.optimization_level=-1, opcache.jit=1255, opcache.jit_buffer_size=32M" >> $GITHUB_ENV
-
     - name: Install PHP with extensions
       uses: shivammathur/setup-php@v2
       with:

CHANGELOG.md

@@ -6,6 +6,37 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [5.5.2] - 2025-08-26
+
+
+- Fixed escaping of array/object keys in debug_print_var
+
+## [5.5.1] - 2025-05-19
+- Fix missing support for loading modifiercompilers from plugin dir in BCPluginsAdapter [#1132](https://github.com/smarty-php/smarty/pull/1132)
+
+
+## [5.5.0] - 2025-05-03
+- Support trailing comma in array [#1013](https://github.com/smarty-php/smarty/issues/1013)
+
+
+## [5.4.5] - 2025-04-15
+- Fixed deprecation notice in StringEval in PHP8.4 [#1119](https://github.com/smarty-php/smarty/issues/1119)
+
+
+## [5.4.4] - 2025-04-13
+- Fix syntax error occurring when registering a function plugin that ends with the string 'close' [#1122](https://github.com/smarty-php/smarty/issues/1122)
+- Replace SMARTY_VERSION constant with $smarty.version in debug.tpl [#1073](https://github.com/smarty-php/smarty/issues/1073)
+
+
+## [5.4.3] - 2024-12-23
+- Fix PHP backtraces by qualifying/replacing `call_user_func_array` calls [#1074](https://github.com/smarty-php/smarty/issues/1074)
+
+
+## [5.4.2] - 2024-11-20
+
+
+- Support the deprecations introduced in PHP 8.4 and added tests for PHP 8.4 [#1043](https://github.com/smarty-php/smarty/pull/1043)
+
 ## [5.4.1] - 2024-08-29
 
 

README.md

@@ -7,7 +7,7 @@ Smarty is a template engine for PHP, facilitating the separation of presentation
 Read the [documentation](https://smarty-php.github.io/smarty/) to find out how to use it. 
 
 ## Requirements
-Smarty v5 can be run with PHP 7.2 to PHP 8.3.
+Smarty v5 can be run with PHP 7.2 to PHP 8.4.
 
 ## Installation
 Smarty versions 3.1.11 or later can be installed with [Composer](https://getcomposer.org/).
@@ -18,3 +18,11 @@ composer require smarty/smarty
 ````
 
 More in the [Getting Started](./docs/getting-started.md) section of the docs.
+
+## Sponsors
+
+Smarty is sponsored by:
+- Marc Laporte [@marclaporte](https://github.com/marclaporte)
+- [Temma](https://github.com/Digicreon/Temma), the MVC framework based on Smarty
+
+Thank you!

docker-compose.yml

@@ -42,6 +42,11 @@ services:
       service: base
     build:
       dockerfile: ./utilities/testrunners/php83/Dockerfile
+  php84:
+    extends:
+      service: base
+    build:
+      dockerfile: ./utilities/testrunners/php84/Dockerfile
 volumes:
   smarty-code:
 

docs/designers/language-modifiers/language-modifier-empty.md

@@ -0,0 +1,10 @@
+# empty
+
+Returns true if var does not exist or has a value that is empty or equal to zero, aka falsey, see conversion to boolean. Otherwise returns false.
+
+## Basic usage
+
+```smarty
+{if $myVar|empty}it's an empty variable{/if}
+{if empty($myVar)}it's an empty variable{/if}
+```

docs/designers/language-modifiers/language-modifier-in_array.md

@@ -0,0 +1,17 @@
+# in_array
+
+test if value is contained in an array
+
+## Basic usage
+
+```smarty
+{if in_array('value2', $myarray)} value2 is in myarray{/if}
+```
+
+Can be replaced by operator *is in*
+
+```smarty
+{if 'value2' is in $myarray}value2 is in myarray{/if}
+```
+
+See Also [operators](../language-basic-syntax/language-syntax-operators.md)

docs/getting-started.md

@@ -1,7 +1,7 @@
 # Getting started
 
 ## Requirements
-Smarty can be run with PHP 7.2 to PHP 8.3.
+Smarty can be run with PHP 7.2 to PHP 8.4.
 
 ## Installation
 Smarty can be installed with [Composer](https://getcomposer.org/).

docs/img/iwink-logo.svg

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generator: Adobe Illustrator 21.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+	 viewBox="0 0 343.3 174.5" style="enable-background:new 0 0 343.3 174.5;" xml:space="preserve">
+<style type="text/css">
+	.st0{fill:#E60000;}
+	.st1{fill:#FFFFFF;}
+</style>
+<path class="st0" d="M333.8,0H9.5C4.3,0,0,4.3,0,9.5v155.4c0,5.3,4.3,9.5,9.5,9.5h324.3c5.3,0,9.5-4.3,9.5-9.5V9.5
+	C343.3,4.3,339,0,333.8,0z"/>
+<g>
+	<path class="st1" d="M148.7,58.5c-5.2,0-4.7,4.3-4.7,9.5v38.6c0,5.3,4.3,9.5,9.5,9.5c5.2,0,9.5-4.3,9.5-9.5V81.5
+		C163,65.7,154,58.5,148.7,58.5L148.7,58.5z"/>
+	<path class="st1" d="M47.1,72.6c-5.2,0-4.7,4.3-4.7,9.5v24.5c0,5.2,4.3,9.5,9.5,9.5c5.2,0,9.5-4.3,9.5-9.5V95.5
+		C61.4,79.8,52.4,72.6,47.1,72.6L47.1,72.6z"/>
+	<path class="st1" d="M200.7,58.3c-7.4,0-13.8,6.9-15.2,11.4c-3-7.6-8.5-11.2-12.2-11.2c-5.2,0-4.7,4.3-4.7,9.5l0.1,9.5v29.1
+		c0,5.2,4.3,9.5,9.5,9.5c5.2,0,9.5-4.3,9.5-9.5V84.4c0-3.8,1.2-8.4,7-8.4c1.7,0,6.8,0,6.8,8.4v22.2c0,5.2,4.3,9.5,9.5,9.5
+		c5.2,0,9.5-4.3,9.5-9.5V79.8C220.5,66.5,212.9,58.3,200.7,58.3L200.7,58.3z"/>
+	<path class="st1" d="M130.8,58.4c-4.4,0-7.7,2.6-9.1,7.1l-6.1,19.9l-6.1-19.7c-1.4-4.6-5.1-7.4-9.6-7.4h-0.9
+		c-4.5,0-8.2,2.8-9.6,7.4l-5.4,17.5c-1.5-4.9-5.8-31.4-31.1-33c-8.7-0.5-11.2,4.7-12,7.6c-0.7,2.8-0.4,5.2,1.3,7.3
+		c1.7,2.2,5,2.5,8.9,4C61,73,63.6,81.8,65.9,87.3c0.8,1.9,6.4,20.8,6.4,20.8c1.8,5.2,5.4,8.1,10.2,8.1H83c4.8,0,8.4-2.9,10-7.8
+		l6.3-19.7l6.2,19.7c1.6,5,5.2,7.8,10,7.8h0.5c4.8,0,8.4-2.9,10.2-8L139.2,71l0-0.1c0.2-0.7,0.6-2.3,0.6-3.6
+		C139.8,62.3,135.9,58.4,130.8,58.4L130.8,58.4z"/>
+	<path class="st1" d="M276,99.9c-0.2-0.2-0.4-0.4-0.6-0.6l-14.1-14.4l11.3-9.6l0,0c1.9-1.8,4.1-4.3,4.1-8c0-4.3-3.2-8.7-8.6-8.7
+		c-3.6,0-5.9,1.9-8,3.9l-15,14.2c-1.6-12.5-9.2-18.4-14-18.4c-4.2,0-4.8,2.7-4.8,6.5c-0.1,1.1-0.1,2.4-0.1,3.7v38
+		c0,4.9,3.8,9.1,8.6,9.6c0.3,0,0.7,0.1,1,0.1c5.3,0,9.5-4.4,9.5-9.6v-7.5l3.3-3l14.5,16.4c0.6,0.6,1.3,1.3,2.1,1.9
+		c1.1,0.9,2.5,1.5,4.2,1.8c0.1,0,1.2,0.1,1.8,0.1c4.3-0.1,8.7-3.2,8.6-8.6C279.6,104.1,277.9,101.9,276,99.9L276,99.9z"/>
+	<circle class="st1" cx="293.3" cy="106.7" r="9.5"/>
+</g>
+</svg>

docs/img/temma-logo.svg

@@ -0,0 +1,68 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   width="195mm"
+   height="43.093071mm"
+   viewBox="0 0 195 43.093071"
+   version="1.1"
+   id="svg1156"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <defs
+     id="defs1153" />
+  <g
+     id="layer1"
+     transform="translate(-6.9662436,-7.8467567)">
+    <g
+       id="g21305-1"
+       style="font-size:33.5139px;line-height:1.25;stroke-width:0.0700042"
+       transform="translate(1.0553387,0.93988827)">
+      <g
+         id="g21248-5">
+        <rect
+           style="font-size:33.5139px;line-height:1.25;fill:#107ef4;fill-opacity:1;stroke:none;stroke-width:0.0727743"
+           id="rect846-9-0-1-2-7-2-1-9"
+           width="43.093071"
+           height="43.093071"
+           x="5.9109049"
+           y="6.9068685"
+           ry="2.4179134" />
+        <path
+           d="M 22.234889,18.179756 V 36.734061 H 19.567887 V 18.179756 h -6.882585 v -2.35155 h 16.403494 v 2.35155 z"
+           style="font-size:31.75px;line-height:1.25;font-family:FreeSans;-inkscape-font-specification:FreeSans;fill:#ffffff;stroke-width:0.238978"
+           id="path16874-7-9-2-4" />
+        <path
+           d="m 41.725989,35.328866 v 1.806679 q -0.946355,0.258097 -1.634613,0.258097 -2.380228,0 -2.46626,-2.380228 -1.691969,2.380228 -4.674422,2.380228 -1.548582,0 -2.580969,-0.745614 v 6.395069 H 27.989497 V 21.707084 h 2.380228 v 10.639329 q 0,1.347839 0.831645,2.150808 0.831646,0.802968 2.23684,0.802968 1.864034,0 2.982454,-1.376517 1.11842,-1.405195 1.11842,-3.699389 v -8.517199 h 2.380227 v 12.503362 q 0,1.175775 1.290485,1.175775 0.229419,0 0.516193,-0.05736 z"
+           style="font-size:31.75px;line-height:1.25;font-family:FreeSans;-inkscape-font-specification:FreeSans;fill:#ffffff;stroke-width:0.238978"
+           id="path16871-6-1-9-9" />
+      </g>
+      <g
+         aria-label="Temma"
+         transform="matrix(0.91459055,0,0,0.9686482,-4.3308403,0.67015143)"
+         id="text87274-2-5-0"
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+           style="font-weight:600;font-family:Poppins;-inkscape-font-specification:'Poppins Semi-Bold';fill:#000000"
+           id="path7789-2-0-1" />
+      </g>
+    </g>
+  </g>
+</svg>

docs/index.md

@@ -32,4 +32,14 @@ and 480 for $height, the result is:
 - [Troubleshooting](./appendixes/troubleshooting.md)
 
 ## Source code
-- [Smarty repository at GitHub](https://github.com/smarty-php/smarty)
+- [Smarty repository at GitHub](https://github.com/smarty-php/smarty)
+
+## Sponsors
+
+### <img src="img/iwink-logo.svg" alt="iWink logo" width="100">
+
+[iWink](https://www.iwink.nl/), fullservice digital agency
+
+### <img src="img/temma-logo.svg" alt="Temma logo" width="100">
+
+[Temma](https://www.temma.net/), the MVC framework based on Smarty

docs/upgrading.md

@@ -49,6 +49,11 @@ $smarty->registerPlugin('modifier', 'my_special_func', 'my_special_func');
 
 But you may want to consider writing a proper [extension](api/extending/extensions.md).
 
+#### Passing parameters by reference
+You cannot use plugins that expect a parameter by reference anymore. PHP-function such as `reset()`, `prev()`, 
+`next()` and `end()` can be registered as plugin, but they won't work because they expect a parameter by 
+reference and Smarty will try to pass it by value.
+
 ### Removed undocumented tags
 
 Smarty 4 still supported some tags that have been carried over from previous version, but have never been documented.
@@ -102,6 +107,15 @@ Search your code for the following changes:
 - `$smarty->assignByRef()` should be replaced with `$smarty->assign()`
 - `$smarty->loadPlugin()` should be replaced with `$smarty->registerPlugin()`
 
+### Removed undocumented magic API methods
+
+Smarty v4 allowed setting (internal) properties for which no setter existed by using magic methods 
+that start with either `set` or `get`. This has been removed in Smarty 5.
+
+For example, `$smarty->setErrorUnassigned(true);` would set the `error_unassigned` property.
+
+Every setter of getter that was ever documented or unit tested has been kept.
+
 ### Removed PHP constants
 
 The following constants have been removed to prevent global side effects.

mkdocs.yml

@@ -57,9 +57,11 @@ nav:
         - 'date_format': 'designers/language-modifiers/language-modifier-date-format.md'
         - 'debug_print_var': 'designers/language-modifiers/language-modifier-debug-print-var.md'
         - 'default': 'designers/language-modifiers/language-modifier-default.md'
+        - 'empty': "designers/language-modifiers/language-modifier-empty.md"
         - 'escape': 'designers/language-modifiers/language-modifier-escape.md'
         - 'from_charset': 'designers/language-modifiers/language-modifier-from-charset.md'
         - 'indent': 'designers/language-modifiers/language-modifier-indent.md'
+        - 'in_array': 'designers/language-modifiers/language-modifier-in_array.md'
         - 'is_array': 'designers/language-modifiers/language-modifier-is_array.md'
         - 'isset': 'designers/language-modifiers/language-modifier-isset.md'
         - 'join': 'designers/language-modifiers/language-modifier-join.md'

run-tests-for-all-php-versions.sh

@@ -14,3 +14,4 @@ $COMPOSE_CMD run --rm php80 ./run-tests.sh $@ && \
 $COMPOSE_CMD run --rm php81 ./run-tests.sh $@ && \
 $COMPOSE_CMD run --rm php82 ./run-tests.sh $@
 $COMPOSE_CMD run --rm php83 ./run-tests.sh $@
+$COMPOSE_CMD run --rm php84 ./run-tests.sh $@

src/BlockHandler/BlockPluginWrapper.php

@@ -14,6 +14,6 @@ class BlockPluginWrapper extends Base {
 	}
 
 	public function handle($params, $content, Template $template, &$repeat) {
-		return call_user_func_array($this->callback, [$params, $content, &$template, &$repeat]);
+		return \call_user_func_array($this->callback, [$params, $content, &$template, &$repeat]);
 	}
 }

src/Cacheresource/Base.php

@@ -44,7 +44,7 @@ abstract class Base
 	 */
     abstract public function process(
 	    Template $_template,
-	    Cached   $cached = null,
+	    ?Cached  $cached = null,
 	             $update = false
     );
 

src/Cacheresource/Custom.php

@@ -139,7 +139,7 @@ abstract class Custom extends Base
 	 */
     public function process(
 	    Template               $_smarty_tpl,
-	    \Smarty\Template\Cached $cached = null,
+	    ?\Smarty\Template\Cached $cached = null,
 	                           $update = false
     ) {
         if (!$cached) {

src/Cacheresource/File.php

@@ -99,7 +99,7 @@ class File extends Base
 	 */
     public function process(
 	    Template $_smarty_tpl,
-	    Cached   $cached = null,
+	    ?Cached  $cached = null,
 	             $update = false
     ) {
         $_smarty_tpl->getCached()->setValid(false);

src/Cacheresource/KeyValueStore.php

@@ -103,7 +103,7 @@ abstract class KeyValueStore extends Base
 	 */
     public function process(
 	    Template $_smarty_tpl,
-	    Cached   $cached = null,
+	    ?Cached  $cached = null,
 	             $update = false
     ) {
         if (!$cached) {

src/Compiler/CodeFrame.php

@@ -41,7 +41,7 @@ class CodeFrame
         $content = '',
         $functions = '',
         $cache = false,
-        \Smarty\Compiler\Template $compiler = null
+        ?\Smarty\Compiler\Template $compiler = null
     ) {
         // build property code
         $properties[ 'version' ] = \Smarty\Smarty::SMARTY_VERSION;

src/Compiler/Template.php

@@ -374,7 +374,7 @@ class Template extends BaseCompiler {
 	 * @throws CompilerException
 	 * @throws Exception
 	 */
-	public function compileTemplateSource(\Smarty\Template $template, \Smarty\Compiler\Template $parent_compiler = null) {
+	public function compileTemplateSource(\Smarty\Template $template, ?\Smarty\Compiler\Template $parent_compiler = null) {
 		try {
 			// save template object in compiler class
 			$this->template = $template;
@@ -505,7 +505,7 @@ class Template extends BaseCompiler {
 	 *
 	 * @return string
 	 */
-	public function compileVariable($variable) {
+	public function triggerTagNoCache($variable): void {
 		if (!strpos($variable, '(')) {
 			// not a variable variable
 			$var = trim($variable, '\'');
@@ -516,7 +516,6 @@ class Template extends BaseCompiler {
 					false
 				)->isNocache();
 		}
-		return '$_smarty_tpl->getValue(' . $variable . ')';
 	}
 
 	/**
@@ -665,7 +664,7 @@ class Template extends BaseCompiler {
 		$script = null;
 		$cacheable = true;
 
-		$result = call_user_func_array(
+		$result = \call_user_func_array(
 			$defaultPluginHandlerFunc,
 			[
 				$tag,
@@ -1147,12 +1146,12 @@ class Template extends BaseCompiler {
 		}
 
 		// check if tag is a function
-		if ($this->smarty->getFunctionHandler($base_tag)) {
-			if (!isset($this->smarty->security_policy) || $this->smarty->security_policy->isTrustedTag($base_tag, $this)) {
+		if ($this->smarty->getFunctionHandler($tag)) {
+			if (!isset($this->smarty->security_policy) || $this->smarty->security_policy->isTrustedTag($tag, $this)) {
 				return (new \Smarty\Compile\PrintExpressionCompiler())->compile(
 					['nofilter'], // functions are never auto-escaped
 					$this,
-					['value' =>	$this->compileFunctionCall($base_tag, $args, $parameter)]
+					['value' =>	$this->compileFunctionCall($tag, $args, $parameter)]
 				);
 			}
 		}
@@ -1165,16 +1164,16 @@ class Template extends BaseCompiler {
 		}
 
 		// the default plugin handler is a handler of last resort, it may also handle not specifically registered tags.
-		if ($callback = $this->getPluginFromDefaultHandler($base_tag, Smarty::PLUGIN_COMPILER)) {
+		if ($callback = $this->getPluginFromDefaultHandler($tag, Smarty::PLUGIN_COMPILER)) {
 			if (!empty($parameter['modifierlist'])) {
-				throw new CompilerException('No modifiers allowed on ' . $base_tag);
+				throw new CompilerException('No modifiers allowed on ' . $tag);
 			}
 			$tagCompiler = new \Smarty\Compile\Tag\BCPluginWrapper($callback);
 			return $tagCompiler->compile($args, $this, $parameter);
 		}
 
 		if ($this->getPluginFromDefaultHandler($base_tag, Smarty::PLUGIN_FUNCTION)) {
-			return $this->defaultHandlerFunctionCallCompiler->compile($args, $this, $parameter, $tag, $base_tag);
+			return $this->defaultHandlerFunctionCallCompiler->compile($args, $this, $parameter, $tag, $tag);
 		}
 
 		if ($this->getPluginFromDefaultHandler($base_tag, Smarty::PLUGIN_BLOCK)) {
@@ -1281,9 +1280,10 @@ class Template extends BaseCompiler {
 		}
 		// call post compile callbacks
 		foreach ($this->postCompileCallbacks as $cb) {
-			$parameter = $cb;
-			$parameter[0] = $this;
-			call_user_func_array($cb[0], $parameter);
+			$callbackFunction = $cb[0];
+			$parameters = $cb;
+			$parameters[0] = $this;
+			$callbackFunction(...$parameters);
 		}
 		// return compiled code
 		return $this->prefixCompiledCode . $this->parser->retvalue . $this->postfixCompiledCode;

src/CompilerException.php

@@ -16,14 +16,14 @@ class CompilerException extends Exception {
 	 * @param int $code The Exception code.
 	 * @param string|null $filename The filename where the exception is thrown.
 	 * @param int|null $line The line number where the exception is thrown.
-	 * @param Throwable|null $previous The previous exception used for the exception chaining.
+	 * @param \Throwable|null $previous The previous exception used for the exception chaining.
 	 */
 	public function __construct(
 		string    $message = "",
 		int       $code = 0,
 		?string   $filename = null,
 		?int      $line = null,
-		Throwable $previous = null
+		?\Throwable $previous = null
 	) {
 		parent::__construct($message, $code, $previous);
 

src/Extension/BCPluginsAdapter.php

@@ -168,7 +168,6 @@ class BCPluginsAdapter extends Base {
 	}
 
 	public function loadPluginsFromDir(string $path) {
-
 		foreach([
 			'function',
 			'modifier',
@@ -177,6 +176,7 @@ class BCPluginsAdapter extends Base {
 		    'prefilter',
 		    'postfilter',
 		    'outputfilter',
+		    'modifiercompiler',
 		] as $type) {
 			foreach (glob($path  . $type . '.?*.php') as $filename) {
 				$pluginName = $this->getPluginNameFromFilename($filename);
@@ -226,4 +226,4 @@ class BCPluginsAdapter extends Base {
 		return $matches[1];
 	}
 
-}
+}

src/Extension/CallbackWrapper.php

@@ -26,7 +26,7 @@ class CallbackWrapper {
 
 	public function handle(...$params) {
 		try {
-			return call_user_func_array($this->callback, $params);
+			return ($this->callback)(...$params);
 		} catch (\ArgumentCountError $e) {
 			throw new Exception("Invalid number of arguments to modifier " . $this->modifierName);
 		}

src/Extension/DefaultExtension.php

@@ -320,7 +320,7 @@ class DefaultExtension extends Base {
 					break;
 				}
 				foreach ($var as $curr_key => $curr_val) {
-					$results .= '<br>' . str_repeat('&nbsp;', $depth * 2) . '<b>' . strtr($curr_key, $_replace) .
+					$results .= '<br>' . str_repeat('&nbsp;', $depth * 2) . '<b>' . htmlspecialchars(strtr($curr_key, $_replace)) .
 						'</b> =&gt; ' .
 						$this->smarty_modifier_debug_print_var($curr_val, $max, $length, ++$depth, $objects);
 					$depth--;
@@ -338,7 +338,7 @@ class DefaultExtension extends Base {
 				}
 				$objects[] = $var;
 				foreach ($object_vars as $curr_key => $curr_val) {
-					$results .= '<br>' . str_repeat('&nbsp;', $depth * 2) . '<b> -&gt;' . strtr($curr_key, $_replace) .
+					$results .= '<br>' . str_repeat('&nbsp;', $depth * 2) . '<b> -&gt;' . htmlspecialchars(strtr($curr_key, $_replace)) .
 						'</b> = ' . $this->smarty_modifier_debug_print_var($curr_val, $max, $length, ++$depth, $objects);
 					$depth--;
 				}

src/Parser/TemplateParser.y

@@ -19,7 +19,7 @@ use \Smarty\ParseTree\Code;
 use \Smarty\ParseTree\Dq;
 use \Smarty\ParseTree\DqContent;
 use \Smarty\ParseTree\Tag;
-
+use \Smarty\CompilerException;
 
 /**
 * Smarty Template Parser Class
@@ -306,7 +306,8 @@ smartytag(A)   ::= SIMPELOUTPUT(B). {
         $attributes[] = 'nocache';
         $var = $match[1];
     }
-    A = $this->compiler->compilePrintExpression($this->compiler->compileVariable('\''.$var.'\''), $attributes);
+    $this->compiler->triggerTagNoCache($var);
+    A = $this->compiler->compilePrintExpression('$_smarty_tpl->getValue(\''.$var.'\')', $attributes);
 }
 
 // simple tag like {name}
@@ -375,7 +376,7 @@ outattr(A) ::= output(B) attributes(C). {
     A = array(B,C);
 }
 
-output(A) ::= variable(B). {
+output(A) ::= variablevalue(B). {
     A = B;
 }
 output(A) ::= value(B). {
@@ -689,7 +690,8 @@ nullcoalescing(res)        ::= expr(v) QMARK QMARK expr(e2). {
 // ternary
 //
 ternary(res)        ::= expr(v) QMARK DOLLARID(e1) COLON  expr(e2). {
-    res = v.' ? '. $this->compiler->compileVariable('\''.substr(e1,1).'\'') . ' : '.e2;
+    $this->compiler->triggerTagNoCache(substr(e1,1));
+    res = v.' ? $_smarty_tpl->getValue(\''.substr(e1,1).'\') : '.e2;
 }
 
 ternary(res)        ::= expr(v) QMARK value(e1) COLON expr(e2). {
@@ -706,7 +708,7 @@ ternary(res)        ::= expr(v) QMARK COLON expr(e2). {
 }
 
                  // value
-value(res)       ::= variable(v). {
+value(res)       ::= variablevalue(v). {
     res = v;
 }
 
@@ -724,7 +726,7 @@ value(res)       ::= TYPECAST(t) value(v). {
     res = t.v;
 }
 
-value(res)       ::= variable(v) INCDEC(o). {
+value(res)       ::= variablevalue(v) INCDEC(o). {
     res = v.o;
 }
 
@@ -771,10 +773,10 @@ value(res)       ::= OPENP expr(e) CLOSEP. {
     res = '('. e .')';
 }
 
-value(res)        ::= variable(v1) INSTANCEOF(i) ns1(v2). {
+value(res)        ::= variablevalue(v1) INSTANCEOF(i) ns1(v2). {
       res = v1.i.v2;
 }
-value(res)        ::= variable(v1) INSTANCEOF(i) variable(v2). {
+value(res)        ::= variablevalue(v1) INSTANCEOF(i) variablevalue(v2). {
       res = v1.i.v2;
 }
 
@@ -797,7 +799,8 @@ value(res)    ::= varindexed(vi) DOUBLECOLON static_class_access(r). {
     if (vi['var'] === '\'smarty\'') {
         $this->compiler->appendPrefixCode("<?php {$prefixVar} = ". (new \Smarty\Compile\SpecialVariableCompiler())->compile(array(),$this->compiler,vi['smarty_internal_index']).';?>');
      } else {
-        $this->compiler->appendPrefixCode("<?php  {$prefixVar} = ". $this->compiler->compileVariable(vi['var']).vi['smarty_internal_index'].';?>');
+        $this->compiler->triggerTagNoCache(vi['var']);
+        $this->compiler->appendPrefixCode("<?php  {$prefixVar} = \$_smarty_tpl->getValue(" . vi['var'] . ')'.vi['smarty_internal_index'].';?>');
     }
     res = $prefixVar .'::'.r[0].r[1];
 }
@@ -847,54 +850,88 @@ ns1(res)           ::= NAMESPACE(i). {
     }
 
 
+// variable lists
 
+// multiple variables
+variablelist(res)       ::= variablelist(l) COMMA variable(v). {
+    res = array_merge(l,array(v));
+}
+
+variablelist(res)       ::= variablelist(l) COMMA expr(e). {
+    res = array_merge(l,array(e));
+}
+
+// single variable
+variablelist(res)       ::= variable(v). {
+    res = array(v);
+}
+
+// single expression
+variablelist(res)       ::= expr(e). {
+    res = array(e);
+}
+
+// no variable
+variablelist(res)       ::= . {
+    res = array();
+}
 
 //
 // variables 
 //
                   // Smarty variable (optional array)
 variable(res)    ::= DOLLARID(i). {
-   res = $this->compiler->compileVariable('\''.substr(i,1).'\'');
+   $this->compiler->triggerTagNoCache(substr(i,1));
+   res = array('$_smarty_tpl->hasVariable(\''.substr(i,1).'\')','$_smarty_tpl->getValue(\''.substr(i,1).'\')');
 }
 variable(res)    ::= varindexed(vi). {
     if (vi['var'] === '\'smarty\'') {
         $smarty_var = (new \Smarty\Compile\SpecialVariableCompiler())->compile(array(),$this->compiler,vi['smarty_internal_index']);
-        res = $smarty_var;
+        res = array('true', $smarty_var);
     } else {
         // used for array reset,next,prev,end,current 
         $this->last_variable = vi['var'];
         $this->last_index = vi['smarty_internal_index'];
-        res = $this->compiler->compileVariable(vi['var']).vi['smarty_internal_index'];
+        $this->compiler->triggerTagNoCache(vi['var']);
+        res = array('true', '$_smarty_tpl->getValue(' . vi['var'] . ')'.vi['smarty_internal_index']);
     }
 }
 
                   // variable with property
 variable(res)    ::= varvar(v) AT ID(p). {
-    res = '$_smarty_tpl->getVariable('. v .')->'.p;
+    res = array('true', '$_smarty_tpl->getVariable('. v .')->'.p);
 }
 
                   // object
 variable(res)    ::= object(o). {
-    res = o;
+    res = array('true', o);
 }
 
                   // config variable
-variable(res)    ::= HATCH ID(i) HATCH. {
+configvariable(res)    ::= HATCH ID(i) HATCH. {
     res = $this->compiler->compileConfigVariable('\'' . i . '\'');
 }
 
-variable(res)    ::= HATCH ID(i) HATCH arrayindex(a). {
+configvariable(res)    ::= HATCH ID(i) HATCH arrayindex(a). {
     res = '(is_array($tmp = ' . $this->compiler->compileConfigVariable('\'' . i . '\'') . ') ? $tmp'.a.' :null)';
 }
 
-variable(res)    ::= HATCH variable(v) HATCH. {
+configvariable(res)    ::= HATCH variablevalue(v) HATCH. {
     res = $this->compiler->compileConfigVariable(v);
 }
 
-variable(res)    ::= HATCH variable(v) HATCH arrayindex(a). {
+configvariable(res)    ::= HATCH variablevalue(v) HATCH arrayindex(a). {
     res = '(is_array($tmp = ' . $this->compiler->compileConfigVariable(v) . ') ? $tmp'.a.' : null)';
 }
 
+variablevalue(res)    ::= variable(v). {
+    res = v[1];
+}
+
+variablevalue(res)    ::= configvariable(v). {
+    res = v;
+}
+
 varindexed(res)  ::= DOLLARID(i) arrayindex(a). {
     res = array('var'=>'\''.substr(i,1).'\'', 'smarty_internal_index'=>a);
 }
@@ -918,14 +955,17 @@ arrayindex        ::= . {
 // single index definition
                     // Smarty2 style index 
 indexdef(res)    ::= DOT DOLLARID(i).  {
-    res = '['.$this->compiler->compileVariable('\''.substr(i,1).'\'').']';
+    $this->compiler->triggerTagNoCache(substr(i,1));
+    res = '[$_smarty_tpl->getValue(\''.substr(i,1).'\')]';
 }
 indexdef(res)    ::= DOT varvar(v).  {
-    res = '['.$this->compiler->compileVariable(v).']';
+    $this->compiler->triggerTagNoCache(v);
+    res = '[$_smarty_tpl->getValue(' . v . ')]';
 }
 
 indexdef(res)    ::= DOT varvar(v) AT ID(p). {
-    res = '['.$this->compiler->compileVariable(v).'->'.p.']';
+    $this->compiler->triggerTagNoCache(v);
+    res = '[$_smarty_tpl->getValue(' . v . ')->'.p.']';
 }
 
 indexdef(res)   ::= DOT ID(i). {
@@ -956,9 +996,10 @@ indexdef(res)   ::= OPENB INTEGER(n) CLOSEB. {
     res = '['.n.']';
 }
 indexdef(res)   ::= OPENB DOLLARID(i) CLOSEB. {
-    res = '['.$this->compiler->compileVariable('\''.substr(i,1).'\'').']';
+    $this->compiler->triggerTagNoCache(substr(i,1));
+    res = '[$_smarty_tpl->getValue(\''.substr(i,1).'\')]';
 }
-indexdef(res)   ::= OPENB variable(v) CLOSEB. {
+indexdef(res)   ::= OPENB variablevalue(v) CLOSEB. {
     res = '['.v.']';
 }
 indexdef(res)   ::= OPENB value(v) CLOSEB. {
@@ -1000,7 +1041,8 @@ varvarele(res)   ::= ID(s). {
 }
 varvarele(res)   ::= SIMPELOUTPUT(i). {
     $var = trim(substr(i, $this->compiler->getLdelLength(), -$this->compiler->getRdelLength()), ' $');
-    res = $this->compiler->compileVariable('\''.$var.'\'');
+    $this->compiler->triggerTagNoCache($var);
+    res = '$_smarty_tpl->getValue(\''.$var.'\')';
 }
 
                     // variable sections of element
@@ -1015,7 +1057,8 @@ object(res)    ::= varindexed(vi) objectchain(oc). {
     if (vi['var'] === '\'smarty\'') {
         res = (new \Smarty\Compile\SpecialVariableCompiler())->compile(array(),$this->compiler,vi['smarty_internal_index']).oc;
     } else {
-        res = $this->compiler->compileVariable(vi['var']).vi['smarty_internal_index'].oc;
+        $this->compiler->triggerTagNoCache(vi['var']);
+        res = '$_smarty_tpl->getValue(' . vi['var'] . ')'.vi['smarty_internal_index'].oc;
     }
 }
 
@@ -1041,7 +1084,8 @@ objectelement(res)::= PTR varvar(v) arrayindex(a). {
     if ($this->security) {
         $this->compiler->trigger_template_error (self::ERR2);
     }
-    res = '->{'.$this->compiler->compileVariable(v).a.'}';
+    $this->compiler->triggerTagNoCache(v);
+    res = '->{$_smarty_tpl->getValue(' . v . ')'.a.'}';
 }
 
 objectelement(res)::= PTR LDEL expr(e) RDEL arrayindex(a). {
@@ -1067,8 +1111,41 @@ objectelement(res)::= PTR method(f).  {
 //
 // function
 //
-function(res)     ::= ns1(f) OPENP params(p) CLOSEP. {
-    res = $this->compiler->compileModifierInExpression(f, p);
+function(res)     ::= ns1(f) OPENP variablelist(v) CLOSEP. {
+
+    if (f == 'isset') {
+        res = '(true';
+        if (count(v) == 0) {
+            throw new CompilerException("Invalid number of arguments for isset. isset expects at least one parameter.");
+        }
+        foreach (v as $value) {
+            if (is_array($value)) {
+                res .= ' && (' . $value[0] . ' && null !== (' . $value[1] . ' ?? null))';
+            } else {
+                res .= ' && (' . $value . ' !== null)';
+            }
+        }
+        res .= ')';
+    } elseif (f == 'empty') {
+        if (count(v) != 1) {
+            throw new CompilerException("Invalid number of arguments for empty. empty expects at exactly one parameter.");
+        }
+        if (is_array(v[0])) {
+            res .= '( !' . v[0][0] . ' || empty(' . v[0][1] . '))';
+        } else {
+            res = 'false == ' . v[0];
+        }
+    } else {
+        $p = array();
+        foreach (v as $value) {
+            if (is_array($value)) {
+                $p[] = $value[1];
+            } else {
+                $p[] = $value;
+            }
+        }
+        res = $this->compiler->compileModifierInExpression(f, $p);
+    }
 }
 
 
@@ -1087,7 +1164,8 @@ method(res)     ::= DOLLARID(f) OPENP params(p) CLOSEP.  {
         $this->compiler->trigger_template_error (self::ERR2);
     }
     $prefixVar = $this->compiler->getNewPrefixVariable();
-    $this->compiler->appendPrefixCode("<?php {$prefixVar} = ".$this->compiler->compileVariable('\''.substr(f,1).'\'').';?>');
+    $this->compiler->triggerTagNoCache(substr(f,1));
+    $this->compiler->appendPrefixCode("<?php {$prefixVar} = \$_smarty_tpl->getValue('".substr(f,1).'\')'.';?>');
     res = $prefixVar .'('. implode(',',p) .')';
 }
 
@@ -1243,6 +1321,10 @@ arrayelements(res)   ::=  arrayelements(a1) COMMA arrayelement(a).  {
     res = a1.','.a;
 }
 
+arrayelements(res)   ::=  arrayelements(a) COMMA.  {
+    res = a.',';
+}
+
 arrayelements        ::=  .  {
     return;
 }
@@ -1282,7 +1364,7 @@ doublequoted(res)          ::= doublequotedcontent(o). {
     res = new Dq($this, o);
 }
 
-doublequotedcontent(res)           ::=  BACKTICK variable(v) BACKTICK. {
+doublequotedcontent(res)           ::=  BACKTICK variablevalue(v) BACKTICK. {
     res = new Code('(string)'.v);
 }
 
@@ -1294,7 +1376,7 @@ doublequotedcontent(res)           ::=  DOLLARID(i). {
     res = new Code('(string)$_smarty_tpl->getValue(\''. substr(i,1) .'\')');
 }
 
-doublequotedcontent(res)           ::=  LDEL variable(v) RDEL. {
+doublequotedcontent(res)           ::=  LDEL variablevalue(v) RDEL. {
     res = new Code('(string)'.v);
 }
 

src/Resource/BasePlugin.php

@@ -112,7 +112,7 @@ abstract class BasePlugin
 	 * @param Source $source source object
 	 * @param Template|null $_template template object
 	 */
-    abstract public function populate(Source $source, \Smarty\Template $_template = null);
+    abstract public function populate(Source $source, ?\Smarty\Template $_template = null);
 
     /**
      * populate Source Object with timestamp and exists from Resource

src/Resource/CustomPlugin.php

@@ -50,7 +50,7 @@ abstract class CustomPlugin extends BasePlugin {
 	 * @param Source $source source object
 	 * @param Template|null $_template template object
 	 */
-	public function populate(Source $source, Template $_template = null) {
+	public function populate(Source $source, ?Template $_template = null) {
 		$source->uid = sha1($source->type . ':' . $source->name);
 		$mtime = $this->fetchTimestamp($source->name);
 		if ($mtime !== null) {

src/Resource/ExtendsPlugin.php

@@ -23,7 +23,7 @@ class ExtendsPlugin extends BasePlugin
      *
      * @throws Exception
      */
-    public function populate(Source $source, Template $_template = null)
+    public function populate(Source $source, ?Template $_template = null)
     {
         $uid = '';
         $sources = array();

src/Resource/FilePlugin.php

@@ -32,7 +32,7 @@ class FilePlugin extends BasePlugin {
 	 *
 	 * @throws Exception
 	 */
-	public function populate(Source $source, Template $_template = null) {
+	public function populate(Source $source, ?Template $_template = null) {
 
 		$source->uid = sha1(
 			$source->name . ($source->isConfig ? $source->getSmarty()->_joined_config_dir :

src/Resource/StreamPlugin.php

@@ -33,7 +33,7 @@ class StreamPlugin extends RecompiledPlugin {
 	 *
 	 * @return void
 	 */
-	public function populate(Source $source, Template $_template = null) {
+	public function populate(Source $source, ?Template $_template = null) {
 		$source->uid = false;
 		$source->content = $this->getContent($source);
 		$source->timestamp = $source->exists = !!$source->content;

src/Resource/StringEval.php

@@ -31,7 +31,7 @@ class StringEval extends RecompiledPlugin
      *
      * @return void
      */
-    public function populate(\Smarty\Template\Source $source, \Smarty\Template $_template = null)
+    public function populate(\Smarty\Template\Source $source, ?\Smarty\Template $_template = null)
     {
         $source->uid = sha1($source->name);
         $source->timestamp = $source->exists = true;

src/Resource/StringPlugin.php

@@ -31,7 +31,7 @@ class StringPlugin extends BasePlugin {
 	 *
 	 * @return void
 	 */
-	public function populate(Source $source, Template $_template = null) {
+	public function populate(Source $source, ?Template $_template = null) {
 		$source->uid = sha1($source->name);
 		$source->timestamp = $source->exists = true;
 	}

src/Runtime/DefaultPluginHandlerRuntime.php

@@ -26,7 +26,7 @@ class DefaultPluginHandlerRuntime {
 		$script = null;
 		$cacheable = null;
 
-		return (call_user_func_array(
+		return (\call_user_func_array(
 				$this->defaultPluginHandler,
 				[
 					$tag,
@@ -54,7 +54,7 @@ class DefaultPluginHandlerRuntime {
 		$script = null;
 		$cacheable = null;
 
-		if (call_user_func_array(
+		if (\call_user_func_array(
 				$this->defaultPluginHandler,
 				[
 					$tag,

src/Runtime/InheritanceRuntime.php

@@ -162,7 +162,7 @@ class InheritanceRuntime {
 	private function processBlock(
 		Template              $tpl,
 		\Smarty\Runtime\Block $block,
-		\Smarty\Runtime\Block $parent = null
+		?\Smarty\Runtime\Block $parent = null
 	) {
 		if ($block->hide && !isset($block->child)) {
 			return;

src/Smarty.php

@@ -54,7 +54,7 @@ class Smarty extends \Smarty\TemplateBase {
 	/**
 	 * smarty version
 	 */
-	const SMARTY_VERSION = '5.4.1';
+	const SMARTY_VERSION = '5.5.2';
 
 	/**
 	 * define caching modes

src/Template.php

@@ -115,7 +115,7 @@ class Template extends TemplateBase {
 	public function __construct(
 		$template_resource,
 		Smarty $smarty,
-		\Smarty\Data $_parent = null,
+		?\Smarty\Data $_parent = null,
 		$_cache_id = null,
 		$_compile_id = null,
 		$_caching = null,
@@ -248,7 +248,7 @@ class Template extends TemplateBase {
 		$caching,
 		$cache_lifetime,
 		array $extra_vars = [],
-		int $scope = null,
+		?int $scope = null,
 		?string $currentDir = null
 	) {
 
@@ -462,7 +462,7 @@ class Template extends TemplateBase {
 	 * @return string
 	 * @throws Exception
 	 */
-	public function createCodeFrame($content = '', $functions = '', $cache = false, \Smarty\Compiler\Template $compiler = null) {
+	public function createCodeFrame($content = '', $functions = '', $cache = false, ?\Smarty\Compiler\Template $compiler = null) {
 		return $this->getCodeFrameCompiler()->create($content, $functions, $cache, $compiler);
 	}
 

src/Template/Source.php

@@ -134,9 +134,9 @@ class Source {
 	 * @throws Exception
 	 */
 	public static function load(
-		Template $_template = null,
-		Smarty   $smarty = null,
-		         $template_resource = null
+		?Template $_template = null,
+		?Smarty   $smarty = null,
+		          $template_resource = null
 	) {
 		if ($_template) {
 			$smarty = $_template->getSmarty();
@@ -203,7 +203,7 @@ class Source {
 	 */
 	public function _getDefaultTemplate($default_handler) {
 		$_content = $_timestamp = null;
-		$_return = call_user_func_array(
+		$_return = \call_user_func_array(
 			$default_handler,
 			[$this->type, $this->name, &$_content, &$_timestamp, $this->smarty]
 		);

src/TemplateBase.php

@@ -179,7 +179,7 @@ abstract class TemplateBase extends Data {
 	 * @api  Smarty::createData()
 	 *
 	 */
-	public function createData(Data $parent = null, $name = null) {
+	public function createData(?Data $parent = null, $name = null) {
 		/* @var Smarty $smarty */
 		$smarty = $this->getSmarty();
 		$dataObj = new Data($parent, $smarty, $name);

src/debug.tpl

@@ -108,7 +108,7 @@
     </head>
     <body>
 
-    <h1>Smarty {\Smarty\Smarty::SMARTY_VERSION} Debug Console
+    <h1>Smarty {$smarty.version} Debug Console
         -  {if isset($template_name)}{$template_name|debug_print_var nofilter} {/if}{if !empty($template_data)}Total Time {$execution_time|string_format:"%.5f"}{/if}</h1>
 
     {if !empty($template_data)}

tests/PHPUnit_Smarty.php

@@ -64,7 +64,7 @@ class PHPUnit_Smarty extends PHPUnit\Framework\TestCase
      */
     public static function setUpBeforeClass(): void
     {
-        error_reporting(E_ALL & ~E_STRICT & ~E_DEPRECATED & ~E_USER_DEPRECATED);
+        error_reporting(E_ALL & ~E_DEPRECATED & ~E_USER_DEPRECATED);
         self::$init = true;
         self::$pluginsdir =self::getSmartyPluginsDir();
     }

tests/UnitTests/A_2/UndefinedTemplateVar/UndefinedTemplateVarTest.php

@@ -65,15 +65,34 @@ class UndefinedTemplateVarTest extends PHPUnit_Smarty
      */
     public function testError()
     {
-		$this->smarty->error_unassigned = true;
+        $this->smarty->error_unassigned = true;
         $this->expectException(PHPUnit\Framework\Error\Error::class);
-		$this->expectExceptionMessage('Undefined ');
+        $this->expectExceptionMessage('Undefined ');
         $e1 = error_reporting();
         $this->assertEquals('undefined = ', $this->smarty->fetch('001_main.tpl'));
         $e2 = error_reporting();
         $this->assertEquals($e1, $e2);
     }
 
+    public function testNoError()
+    {
+        $this->smarty->error_unassigned = false;
+        $e1 = error_reporting();
+        $this->assertEquals('undefined = ', $this->smarty->fetch('001_main.tpl'));
+        $e2 = error_reporting();
+        $this->assertEquals($e1, $e2);
+    }
+
+    public function testNoErrorForIssetOrEmpty()
+    {
+        $this->smarty->error_unassigned = true;
+        $e1 = error_reporting();
+        $this->assertEquals('undefined = ', $this->smarty->fetch('001_isset.tpl'));
+        $this->assertEquals('undefined = ', $this->smarty->fetch('001_empty.tpl'));
+        $e2 = error_reporting();
+        $this->assertEquals($e1, $e2);
+    }
+
     public function testUndefinedSimpleVar() {
         $this->smarty->muteUndefinedOrNullWarnings();
         $tpl = $this->smarty->createTemplate('string:a{if $undef}def{/if}b');
@@ -133,30 +152,30 @@ class UndefinedTemplateVarTest extends PHPUnit_Smarty
     }
 
 
-	public function testDereferenceOnNull() {
-		$this->smarty->setErrorReporting(E_ALL & ~E_WARNING & ~E_NOTICE);
-		$this->smarty->muteUndefinedOrNullWarnings();
-		$tpl = $this->smarty->createTemplate('string:a{if $object->myprop}def{/if}b');
-		$this->smarty->assign('object', null);
-		$this->assertEquals("ab", $this->smarty->fetch($tpl));
-	}
+    public function testDereferenceOnNull() {
+        $this->smarty->setErrorReporting(E_ALL & ~E_WARNING & ~E_NOTICE);
+        $this->smarty->muteUndefinedOrNullWarnings();
+        $tpl = $this->smarty->createTemplate('string:a{if $object->myprop}def{/if}b');
+        $this->smarty->assign('object', null);
+        $this->assertEquals("ab", $this->smarty->fetch($tpl));
+    }
 
 
-	public function testDereferenceOnBool() {
-		$this->smarty->setErrorReporting(E_ALL & ~E_NOTICE);
-		$this->smarty->muteUndefinedOrNullWarnings();
-		$tpl = $this->smarty->createTemplate('string:a{if $object->myprop}def{/if}b');
-		$this->smarty->assign('object', false);
-		$this->assertEquals("ab", $this->smarty->fetch($tpl));
-	}
+    public function testDereferenceOnBool() {
+        $this->smarty->setErrorReporting(E_ALL & ~E_NOTICE);
+        $this->smarty->muteUndefinedOrNullWarnings();
+        $tpl = $this->smarty->createTemplate('string:a{if $object->myprop}def{/if}b');
+        $this->smarty->assign('object', false);
+        $this->assertEquals("ab", $this->smarty->fetch($tpl));
+    }
 
 
-	public function testDereferenceOnString() {
-		$this->smarty->setErrorReporting(E_ALL & ~E_NOTICE);
-		$this->smarty->muteUndefinedOrNullWarnings();
-		$tpl = $this->smarty->createTemplate('string:a{if $object->myprop}def{/if}b');
-		$this->smarty->assign('object', 'xyz');
-		$this->assertEquals("ab", $this->smarty->fetch($tpl));
-	}
+    public function testDereferenceOnString() {
+        $this->smarty->setErrorReporting(E_ALL & ~E_NOTICE);
+        $this->smarty->muteUndefinedOrNullWarnings();
+        $tpl = $this->smarty->createTemplate('string:a{if $object->myprop}def{/if}b');
+        $this->smarty->assign('object', 'xyz');
+        $this->assertEquals("ab", $this->smarty->fetch($tpl));
+    }
 
 }

tests/UnitTests/A_2/UndefinedTemplateVar/templates/001_empty.tpl

@@ -0,0 +1 @@
+undefined = {if empty($foo)}{/if}

tests/UnitTests/A_2/UndefinedTemplateVar/templates/001_isset.tpl

@@ -0,0 +1 @@
+undefined = {if isset($foo)}{/if}

tests/UnitTests/CacheResourceTests/_shared/PHPunitplugins/resource.filetest.php

@@ -12,7 +12,7 @@ class Smarty_Resource_FiletestPlugin extends FilePlugin
      * @param Source   $source    source object
      * @param Template $_template template object
      */
-    public function populate(Source $source, Template $_template = null)
+    public function populate(Source $source, ?Template $_template = null)
     {
         parent::populate($source, $_template);
         if ($source->exists) {

tests/UnitTests/ResourceTests/Custom/Ambiguous/PHPunitplugins/resource.ambiguous.php

@@ -34,7 +34,7 @@ class Smarty_Resource_AmbiguousPlugin extends FilePlugin
      * @param Source   $source    source object
      * @param Template $_template template object
      */
-    public function populate(Source $source, Template $_template = null)
+    public function populate(Source $source, ?Template $_template = null)
     {
         $segment = '';
         if ($this->segment) {

tests/UnitTests/ResourceTests/ResourcePlugins/PHPunitplugins/resource.db.php

@@ -16,7 +16,7 @@ use Smarty\Template\Source;
 
 class Smarty_Resource_Db extends RecompiledPlugin {
 
-    public function populate(Source $source, Template $_template = null) {
+    public function populate(Source $source, ?Template $_template = null) {
         $source->uid = sha1($source->resource);
         $source->timestamp = 1000000000;
         $source->exists = true;

tests/UnitTests/ResourceTests/ResourcePlugins/PHPunitplugins/resource.db2.php

@@ -16,7 +16,7 @@ use Smarty\Template\Source;
 
 class Smarty_Resource_Db2 extends RecompiledPlugin
 {
-    public function populate(Source $source, Template $_template = null)
+    public function populate(Source $source, ?Template $_template = null)
     {
         $source->uid = sha1($source->resource);
         $source->timestamp = 0;

tests/UnitTests/ResourceTests/ResourcePlugins/PHPunitplugins/resource.db3.php

@@ -15,7 +15,7 @@ use Smarty\Template\Source;
 
 class Smarty_Resource_Db3 extends Smarty\Resource\BasePlugin
 {
-    public function populate(Source $source, Template $_template = null)
+    public function populate(Source $source, ?Template $_template = null)
     {
         $source->uid = sha1($source->resource);
         $source->timestamp = 0;

tests/UnitTests/ResourceTests/ResourcePlugins/PHPunitplugins/resource.db4.php

@@ -16,7 +16,7 @@ use Smarty\Template\Source;
 
 class Smarty_Resource_Db4 extends Smarty\Resource\BasePlugin
 {
-    public function populate(Source $source, Template $_template = null)
+    public function populate(Source $source, ?Template $_template = null)
     {
         $source->uid = sha1($source->resource);
         $source->timestamp = 0;

tests/UnitTests/SmartyMethodsTests/RegisterFunction/RegisterFunctionTest.php

@@ -192,6 +192,15 @@ class RegisterFunctionTest extends PHPUnit_Smarty
         ];
     }
 
+    /**
+     * test registerPlugin for function name ending in 'close' #1122
+     */
+    public function testRegisterFunctionEndingInClose()
+    {
+        $this->smarty->registerPlugin(Smarty::PLUGIN_FUNCTION, 'window_close', 'myfunction');
+        $this->assertEquals('hello world 1', $this->smarty->fetch('eval:{window_close value=1}'));
+    }
+
 }
 
 function myfunction($params, $smarty)

tests/UnitTests/SmartyMethodsTests/RegisterModifier/RegisterModifierFirstClassCallablesTest.php

@@ -0,0 +1,55 @@
+<?php
+// first class callables where introduced in PHP 8.1
+if (PHP_VERSION_ID >= 80100) {
+
+	/**
+	 * class for register modifier with (first class) callables tests
+	 *
+	 * @runTestsInSeparateProcess
+	 * @preserveGlobalState disabled
+	 * @backupStaticAttributes enabled
+	 */
+	class RegisterModifierFirstClassCallablesTest extends PHPUnit_Smarty
+	{
+		public function setUp(): void
+		{
+			$this->setUpSmarty(__DIR__);
+		}
+
+
+		public function testInit()
+		{
+			$this->cleanDirs();
+		}
+
+		public function testRegisterFirstClassCallable()
+		{
+			$this->smarty->registerPlugin(\Smarty\Smarty::PLUGIN_MODIFIER, 'testmodifier', eval('return strrev(...);'));
+			$this->assertEquals('mosredna', $this->smarty->fetch('string:{"andersom"|testmodifier}'));
+		}
+
+		public function testRegisterFirstClassCallableSameName()
+		{
+			$this->smarty->registerPlugin(\Smarty\Smarty::PLUGIN_MODIFIER, 'mymodifier', eval('return strrev(...);'));
+			$this->assertEquals('mosredna', $this->smarty->fetch('string:{"andersom"|mymodifier}'));
+		}
+
+		public function testRegisterFirstClassCallableAsFunc()
+		{
+			$this->smarty->registerPlugin(\Smarty\Smarty::PLUGIN_MODIFIER, 'kprint_r_out', eval('return strrev(...);'));
+			$this->smarty->assign('myVar', 'andersom');
+			$this->assertEquals('mosredna', $this->smarty->fetch('string:{kprint_r_out($myVar)}'));
+		}
+
+		public function testRegisterFirstClassCallableSameNameAsPhpFunc()
+		{
+			$this->smarty->registerPlugin(\Smarty\Smarty::PLUGIN_MODIFIER, 'mymodifierfcc', eval('return strrev(...);'));
+			$this->assertEquals('mosredna', $this->smarty->fetch('string:{mymodifierfcc("andersom")}'));
+		}
+
+	}
+}
+function mymodifierfcc($a, $b, $c)
+{
+	return "$a function $b $c";
+}

tests/UnitTests/SmartyMethodsTests/RegisterModifier/RegisterModifierTest.php

@@ -135,6 +135,20 @@ class RegisterModifierTest extends PHPUnit_Smarty
 		$this->assertEquals($expectedValue, $this->smarty->fetch('string:' . $template));
 	}
 
+	public function testRegisterNativePhpFuncAsString()
+	{
+		$this->smarty->registerPlugin(\Smarty\Smarty::PLUGIN_MODIFIER, 'strrev', 'strrev');
+		$this->smarty->assign('myVar', 'andersom');
+		$this->assertEquals('mosredna', $this->smarty->fetch('string:{strrev($myVar)}'));
+	}
+
+	public function testRegisterNativePhpFuncUnderDifferentName()
+	{
+		$this->smarty->registerPlugin(\Smarty\Smarty::PLUGIN_MODIFIER, 'k_xyz_a', 'strrev');
+		$this->smarty->assign('myVar', 'andersom');
+		$this->assertEquals('mosredna', $this->smarty->fetch('string:{k_xyz_a($myVar)}'));
+	}
+
 }
 
 class WildcardExtension extends \Smarty\Extension\Base {

tests/UnitTests/TemplateSource/TagTests/If/CompileIfTest.php

@@ -41,10 +41,9 @@ class CompileIfTest extends PHPUnit_Smarty
         $name = empty($testName) ? $testNumber : $testName;
         $file = "testIf_{$name}.tpl";
         $this->makeTemplateFile($file, $code);
-        $this->smarty->assignGlobal('file', $file);
+        $this->smarty->assign('file', $file);
         $this->smarty->assign('bar', 'buh');
-        $this->assertEquals($result, $this->smarty->fetch($file),
-                            "testIf - {$code} - {$name}");
+        $this->assertEquals($result, $this->smarty->fetch($file), "testIf - {$code} - {$name}");
     }
 
     /*

tests/UnitTests/TemplateSource/TagTests/TemplateFunction/CompileFunctionTest.php

@@ -442,4 +442,28 @@ class CompileFunctionTest extends PHPUnit_Smarty
 	    $this->smarty->fetch('string:{function name=\'rce(){};echo "hi";function \'}{/function}');
     }
 
+    /**
+     * test shorthand function definition with regular call
+     */
+    public function testShorthand1()
+    {
+        $this->assertEquals("gribus", $this->smarty->fetch('shorthand1.tpl'));
+    }
+
+    /**
+     * test normal function definition with shorthand call
+     */
+    public function testShorthand2()
+    {
+        $this->assertEquals("gribus", $this->smarty->fetch('shorthand2.tpl'));
+    }
+
+    /**
+     * test shorthand function definition with shorthand call
+     */
+    public function testShorthand3()
+    {
+        $this->assertEquals("gribus", $this->smarty->fetch('shorthand3.tpl'));
+    }
+
 }

tests/UnitTests/TemplateSource/TagTests/TemplateFunction/templates/shorthand1.tpl

@@ -0,0 +1,2 @@
+{function blah}gribus{/function}
+{call name=blah}

tests/UnitTests/TemplateSource/TagTests/TemplateFunction/templates/shorthand2.tpl

@@ -0,0 +1,2 @@
+{function name=blah}gribus{/function}
+{blah}

tests/UnitTests/TemplateSource/TagTests/TemplateFunction/templates/shorthand3.tpl

@@ -0,0 +1,2 @@
+{function blah}gribus{/function}
+{blah}

tests/UnitTests/TemplateSource/ValueTests/Array/ArrayTest.php

@@ -70,6 +70,8 @@ class ArrayTest extends PHPUnit_Smarty
                      array('{$foo=[1,2,[7,8,9],4,5]}{$x=2}{$foo.$x.0}', '7', 'T13', $i++),
                      array('{$foo=[1,2,[7,8,9],4,5]}{$x=0}{$foo.2.$x}', '7', 'T14', $i++),
                      array('{$foo=[1,2,[7,8,9],4,5]}{$x=[1,0]}{$foo.2.{$x.1}}', '7', 'T15', $i++),
+                     array('{$foo=[1,2,3,4,5,]}{foreach $foo as $bar}{$bar}{/foreach}', '12345', 'T16', $i++),
+                     array('{$foo=[1,2,3,4,5,[6,7,8,],]}{$foo[5][2]}', '8', 'T17', $i++),
         );
     }
 }

tests/UnitTests/__shared/resources/resource.extendsall.php

@@ -22,7 +22,7 @@ class My_Resource_Extendsall extends \Smarty\Resource\ExtendsPlugin
      *
      * @return void
      */
-    public function populate(Source $source, Template $_template = null)
+    public function populate(Source $source, ?Template $_template = null)
     {
         $uid = '';
         $sources = array();

utilities/testrunners/php84/Dockerfile

@@ -0,0 +1,10 @@
+FROM php:8.4-cli-bullseye
+
+## Basic utilities
+RUN apt-get update -yqq && apt-get install -y curl apt-utils git zip unzip
+
+## Composer
+COPY ./utilities/testrunners/shared/install-composer.sh /root/install-composer.sh
+WORKDIR /root
+RUN sh ./install-composer.sh
+RUN mv ./composer.phar /usr/local/bin/composer