diff --git a/libs/Smarty.class.php b/libs/Smarty.class.php
index 58fd20b7..81fc38f3 100644
--- a/libs/Smarty.class.php
+++ b/libs/Smarty.class.php
@@ -771,7 +771,7 @@ class Smarty extends Smarty_Internal_TemplateBase
             $this->_normalizeTemplateConfig($isConfig);
         }
         if ($index !== null) {
-            return isset($dir[ $index ]) ? $dir[ $index ] : null;
+            return ($dir[ $index ] ?? null);
         }
         return $dir;
     }
diff --git a/libs/plugins/function.counter.php b/libs/plugins/function.counter.php
index 15871050..5b7e6f9c 100644
--- a/libs/plugins/function.counter.php
+++ b/libs/plugins/function.counter.php
@@ -23,7 +23,7 @@
 function smarty_function_counter($params, $template)
 {
     static $counters = array();
-    $name = (isset($params[ 'name' ])) ? $params[ 'name' ] : 'default';
+    $name = $params[ 'name' ] ?? 'default';
     if (!isset($counters[ $name ])) {
         $counters[ $name ] = array('start' => 1, 'skip' => 1, 'direction' => 'up', 'count' => 1);
     }
diff --git a/libs/plugins/function.html_radios.php b/libs/plugins/function.html_radios.php
index 32126125..293a6d27 100644
--- a/libs/plugins/function.html_radios.php
+++ b/libs/plugins/function.html_radios.php
@@ -156,7 +156,7 @@ function smarty_function_html_radios($params, Smarty_Internal_Template $template
         }
     } else {
         foreach ($values as $_i => $_key) {
-            $_val = isset($output[ $_i ]) ? $output[ $_i ] : '';
+            $_val = $output[ $_i ] ?? '';
             $_html_result[] =
                 smarty_function_html_radios_output(
                     $name,
diff --git a/libs/plugins/function.html_select_date.php b/libs/plugins/function.html_select_date.php
index 1ccaedfa..b446ff6f 100644
--- a/libs/plugins/function.html_select_date.php
+++ b/libs/plugins/function.html_select_date.php
@@ -187,9 +187,7 @@ function smarty_function_html_select_date($params, Smarty_Internal_Template $tem
                 'd' => 'Day'
             ) as $_elementKey => $_elementName) {
                 $_variableName = '_' . strtolower($_elementName);
-                $$_variableName =
-                    isset($params[ 'time' ][ $prefix . $_elementName ]) ? $params[ 'time' ][ $prefix . $_elementName ] :
-                        date($_elementKey);
+                $$_variableName = $params[ 'time' ][ $prefix . $_elementName ] ?? date($_elementKey);
             }
         } elseif (isset($params[ 'time' ][ $field_array ][ $prefix . 'Year' ])) {
             // $_REQUEST given
@@ -258,9 +256,8 @@ function smarty_function_html_select_date($params, Smarty_Internal_Template $tem
             if ($year_id !== null || $all_id !== null) {
                 $_html_years .= ' id="' . smarty_function_escape_special_chars(
                         $year_id !== null ?
-                            ($year_id ? $year_id : $_name) :
-                            ($all_id ? ($all_id . $_name) :
-                                $_name)
+                            ($year_id ?? $_name) :
+                            ($all_id ? ($all_id . $_name) : $_name)
                     ) . '"';
             }
             if ($year_size) {
@@ -268,7 +265,7 @@ function smarty_function_html_select_date($params, Smarty_Internal_Template $tem
             }
             $_html_years .= $_extra . $extra_attrs . '>' . $option_separator;
             if (isset($year_empty) || isset($all_empty)) {
-                $_html_years .= '<option value="">' . (isset($year_empty) ? $year_empty : $all_empty) . '</option>' .
+                $_html_years .= '<option value="">' . ($year_empty ?? $all_empty) . '</option>' .
                                 $option_separator;
             }
             $op = $start_year > $end_year ? -1 : 1;
@@ -293,9 +290,8 @@ function smarty_function_html_select_date($params, Smarty_Internal_Template $tem
         if ($month_id !== null || $all_id !== null) {
             $_html_months .= ' id="' . smarty_function_escape_special_chars(
                     $month_id !== null ?
-                        ($month_id ? $month_id : $_name) :
-                        ($all_id ? ($all_id . $_name) :
-                            $_name)
+                        ($month_id ?? $_name) :
+                        ($all_id ? ($all_id . $_name) : $_name)
                 ) . '"';
         }
         if ($month_size) {
@@ -303,14 +299,14 @@ function smarty_function_html_select_date($params, Smarty_Internal_Template $tem
         }
         $_html_months .= $_extra . $extra_attrs . '>' . $option_separator;
         if (isset($month_empty) || isset($all_empty)) {
-            $_html_months .= '<option value="">' . (isset($month_empty) ? $month_empty : $all_empty) . '</option>' .
+            $_html_months .= '<option value="">' . ($month_empty ?? $all_empty) . '</option>' .
                              $option_separator;
         }
         for ($i = 1; $i <= 12; $i++) {
             $_val = sprintf('%02d', $i);
             $_text = isset($month_names) ? smarty_function_escape_special_chars($month_names[ $i ]) :
-                ($month_format === '%m' ? $_val : strftime($month_format, $_month_timestamps[ $i ]));
-            $_value = $month_value_format === '%m' ? $_val : strftime($month_value_format, $_month_timestamps[ $i ]);
+                ($month_format === '%m' ? $_val : @strftime($month_format, $_month_timestamps[ $i ]));
+            $_value = $month_value_format === '%m' ? $_val : @strftime($month_value_format, $_month_timestamps[ $i ]);
             $_html_months .= '<option value="' . $_value . '"' . ($_val == $_month ? ' selected="selected"' : '') .
                              '>' . $_text . '</option>' . $option_separator;
         }
@@ -339,7 +335,7 @@ function smarty_function_html_select_date($params, Smarty_Internal_Template $tem
         }
         $_html_days .= $_extra . $extra_attrs . '>' . $option_separator;
         if (isset($day_empty) || isset($all_empty)) {
-            $_html_days .= '<option value="">' . (isset($day_empty) ? $day_empty : $all_empty) . '</option>' .
+            $_html_days .= '<option value="">' . ($day_empty ?? $all_empty) . '</option>' .
                            $option_separator;
         }
         for ($i = 1; $i <= 31; $i++) {
diff --git a/libs/plugins/function.html_select_time.php b/libs/plugins/function.html_select_time.php
index ccae6d63..10563deb 100644
--- a/libs/plugins/function.html_select_time.php
+++ b/libs/plugins/function.html_select_time.php
@@ -147,9 +147,7 @@ function smarty_function_html_select_time($params, Smarty_Internal_Template $tem
                 's' => 'Second'
             ) as $_elementKey => $_elementName) {
                 $_variableName = '_' . strtolower($_elementName);
-                $$_variableName =
-                    isset($params[ 'time' ][ $prefix . $_elementName ]) ? $params[ 'time' ][ $prefix . $_elementName ] :
-                        date($_elementKey);
+                $$_variableName = $params[ 'time' ][ $prefix . $_elementName ] ?? date($_elementKey);
             }
             $_meridian =
                 isset($params[ 'time' ][ $prefix . 'Meridian' ]) ? (' ' . $params[ 'time' ][ $prefix . 'Meridian' ]) :
@@ -199,7 +197,7 @@ function smarty_function_html_select_time($params, Smarty_Internal_Template $tem
         if ($hour_id !== null || $all_id !== null) {
             $_html_hours .= ' id="' .
                             smarty_function_escape_special_chars(
-                                $hour_id !== null ? ($hour_id ? $hour_id : $_name) :
+                                $hour_id !== null ? ($hour_id ?? $_name) :
                                     ($all_id ? ($all_id . $_name) : $_name)
                             ) . '"';
         }
@@ -208,7 +206,7 @@ function smarty_function_html_select_time($params, Smarty_Internal_Template $tem
         }
         $_html_hours .= $_extra . $extra_attrs . '>' . $option_separator;
         if (isset($hour_empty) || isset($all_empty)) {
-            $_html_hours .= '<option value="">' . (isset($hour_empty) ? $hour_empty : $all_empty) . '</option>' .
+            $_html_hours .= '<option value="">' . ($hour_empty ?? $all_empty) . '</option>' .
                             $option_separator;
         }
         $start = $use_24_hours ? 0 : 1;
@@ -241,9 +239,8 @@ function smarty_function_html_select_time($params, Smarty_Internal_Template $tem
         if ($minute_id !== null || $all_id !== null) {
             $_html_minutes .= ' id="' . smarty_function_escape_special_chars(
                     $minute_id !== null ?
-                        ($minute_id ? $minute_id : $_name) :
-                        ($all_id ? ($all_id . $_name) :
-                            $_name)
+                        ($minute_id ?? $_name) :
+                        ($all_id ? ($all_id . $_name) : $_name)
                 ) . '"';
         }
         if ($minute_size) {
@@ -251,7 +248,7 @@ function smarty_function_html_select_time($params, Smarty_Internal_Template $tem
         }
         $_html_minutes .= $_extra . $extra_attrs . '>' . $option_separator;
         if (isset($minute_empty) || isset($all_empty)) {
-            $_html_minutes .= '<option value="">' . (isset($minute_empty) ? $minute_empty : $all_empty) . '</option>' .
+            $_html_minutes .= '<option value="">' . ($minute_empty ?? $all_empty) . '</option>' .
                               $option_separator;
         }
         $selected = $_minute !== null ? ($_minute - $_minute % $minute_interval) : null;
@@ -279,9 +276,8 @@ function smarty_function_html_select_time($params, Smarty_Internal_Template $tem
         if ($second_id !== null || $all_id !== null) {
             $_html_seconds .= ' id="' . smarty_function_escape_special_chars(
                     $second_id !== null ?
-                        ($second_id ? $second_id : $_name) :
-                        ($all_id ? ($all_id . $_name) :
-                            $_name)
+                        ($second_id ?? $_name) :
+                        ($all_id ? ($all_id . $_name) : $_name)
                 ) . '"';
         }
         if ($second_size) {
@@ -289,7 +285,7 @@ function smarty_function_html_select_time($params, Smarty_Internal_Template $tem
         }
         $_html_seconds .= $_extra . $extra_attrs . '>' . $option_separator;
         if (isset($second_empty) || isset($all_empty)) {
-            $_html_seconds .= '<option value="">' . (isset($second_empty) ? $second_empty : $all_empty) . '</option>' .
+            $_html_seconds .= '<option value="">' . ($second_empty ?? $all_empty) . '</option>' .
                               $option_separator;
         }
         $selected = $_second !== null ? ($_second - $_second % $second_interval) : null;
@@ -317,10 +313,8 @@ function smarty_function_html_select_time($params, Smarty_Internal_Template $tem
         if ($meridian_id !== null || $all_id !== null) {
             $_html_meridian .= ' id="' . smarty_function_escape_special_chars(
                     $meridian_id !== null ?
-                        ($meridian_id ? $meridian_id :
-                            $_name) :
-                        ($all_id ? ($all_id . $_name) :
-                            $_name)
+                        ($meridian_id ?? $_name) :
+                        ($all_id ? ($all_id . $_name) : $_name)
                 ) . '"';
         }
         if ($meridian_size) {
@@ -328,7 +322,7 @@ function smarty_function_html_select_time($params, Smarty_Internal_Template $tem
         }
         $_html_meridian .= $_extra . $extra_attrs . '>' . $option_separator;
         if (isset($meridian_empty) || isset($all_empty)) {
-            $_html_meridian .= '<option value="">' . (isset($meridian_empty) ? $meridian_empty : $all_empty) .
+            $_html_meridian .= '<option value="">' . ($meridian_empty ?? $all_empty) .
                                '</option>' . $option_separator;
         }
         $_html_meridian .= '<option value="am"' . ($_hour > 0 && $_hour < 12 ? ' selected="selected"' : '') .
diff --git a/libs/sysplugins/smarty_cacheresource_custom.php b/libs/sysplugins/smarty_cacheresource_custom.php
index 68ad1128..9295eeef 100644
--- a/libs/sysplugins/smarty_cacheresource_custom.php
+++ b/libs/sysplugins/smarty_cacheresource_custom.php
@@ -117,7 +117,7 @@ abstract class Smarty_CacheResource_Custom extends Smarty_CacheResource
             $cached->content,
             $timestamp
         );
-        $cached->timestamp = isset($timestamp) ? $timestamp : false;
+        $cached->timestamp = $timestamp ?? false;
         $cached->exists = !!$cached->timestamp;
     }
 
@@ -138,8 +138,8 @@ abstract class Smarty_CacheResource_Custom extends Smarty_CacheResource
         if (!$cached) {
             $cached = $_smarty_tpl->cached;
         }
-        $content = $cached->content ? $cached->content : null;
-        $timestamp = $cached->timestamp ? $cached->timestamp : null;
+        $content = $cached->content ?? null;
+        $timestamp = $cached->timestamp ?? null;
         if ($content === null || !$timestamp) {
             $this->fetch(
                 $_smarty_tpl->cached->filepath,
@@ -187,7 +187,7 @@ abstract class Smarty_CacheResource_Custom extends Smarty_CacheResource
      */
     public function readCachedContent(Smarty_Internal_Template $_template)
     {
-        $content = $_template->cached->content ? $_template->cached->content : null;
+        $content = $_template->cached->content ?? null;
         $timestamp = null;
         if ($content === null) {
             $timestamp = null;
diff --git a/libs/sysplugins/smarty_cacheresource_keyvaluestore.php b/libs/sysplugins/smarty_cacheresource_keyvaluestore.php
index 59bf1d4a..9aa1c0e8 100644
--- a/libs/sysplugins/smarty_cacheresource_keyvaluestore.php
+++ b/libs/sysplugins/smarty_cacheresource_keyvaluestore.php
@@ -102,8 +102,8 @@ abstract class Smarty_CacheResource_KeyValueStore extends Smarty_CacheResource
         if (!$cached) {
             $cached = $_smarty_tpl->cached;
         }
-        $content = $cached->content ? $cached->content : null;
-        $timestamp = $cached->timestamp ? $cached->timestamp : null;
+        $content = $cached->content ?? null;
+        $timestamp = $cached->timestamp ?? null;
         if ($content === null || !$timestamp) {
             if (!$this->fetch(
                 $_smarty_tpl->cached->filepath,
@@ -148,7 +148,7 @@ abstract class Smarty_CacheResource_KeyValueStore extends Smarty_CacheResource
      */
     public function readCachedContent(Smarty_Internal_Template $_template)
     {
-        $content = $_template->cached->content ? $_template->cached->content : null;
+        $content = $_template->cached->content ?? null;
         $timestamp = null;
         if ($content === null) {
             if (!$this->fetch(
diff --git a/libs/sysplugins/smarty_internal_compile_block.php b/libs/sysplugins/smarty_internal_compile_block.php
index cbaccd2b..b7e9e731 100644
--- a/libs/sysplugins/smarty_internal_compile_block.php
+++ b/libs/sysplugins/smarty_internal_compile_block.php
@@ -112,7 +112,7 @@ class Smarty_Internal_Compile_Blockclose extends Smarty_Internal_Compile_Shared_
         $_block = $compiler->_cache[ 'blockParams' ][ $compiler->_cache[ 'blockNesting' ] ];
         unset($compiler->_cache[ 'blockParams' ][ $compiler->_cache[ 'blockNesting' ] ]);
         $_name = $_attr[ 'name' ];
-        $_assign = isset($_attr[ 'assign' ]) ? $_attr[ 'assign' ] : null;
+        $_assign = $_attr[ 'assign' ] ?? null;
         unset($_attr[ 'assign' ], $_attr[ 'name' ]);
         foreach ($_attr as $name => $stat) {
             if ((is_bool($stat) && $stat !== false) || (!is_bool($stat) && $stat !== 'false')) {
diff --git a/libs/sysplugins/smarty_internal_compile_capture.php b/libs/sysplugins/smarty_internal_compile_capture.php
index a4ffbc9e..1c55bb2b 100644
--- a/libs/sysplugins/smarty_internal_compile_capture.php
+++ b/libs/sysplugins/smarty_internal_compile_capture.php
@@ -63,9 +63,9 @@ class Smarty_Internal_Compile_Capture extends Smarty_Internal_CompileBase
     {
         // check and get attributes
         $_attr = $this->getAttributes($compiler, $args, $parameter, 'capture');
-        $buffer = isset($_attr[ 'name' ]) ? $_attr[ 'name' ] : "'default'";
-        $assign = isset($_attr[ 'assign' ]) ? $_attr[ 'assign' ] : 'null';
-        $append = isset($_attr[ 'append' ]) ? $_attr[ 'append' ] : 'null';
+        $buffer = $_attr[ 'name' ] ?? "'default'";
+        $assign = $_attr[ 'assign' ] ?? 'null';
+        $append = $_attr[ 'append' ] ?? 'null';
         $compiler->_cache[ 'capture_stack' ][] = array($compiler->nocache);
         // maybe nocache because of nocache variables
         $compiler->nocache = $compiler->nocache | $compiler->tag_nocache;
diff --git a/libs/sysplugins/smarty_internal_compile_child.php b/libs/sysplugins/smarty_internal_compile_child.php
index f728c18b..efea2c17 100644
--- a/libs/sysplugins/smarty_internal_compile_child.php
+++ b/libs/sysplugins/smarty_internal_compile_child.php
@@ -63,7 +63,7 @@ class Smarty_Internal_Compile_Child extends Smarty_Internal_CompileBase
         if ($this->blockType === 'Child') {
             $compiler->_cache[ 'blockParams' ][ $compiler->_cache[ 'blockNesting' ] ][ 'callsChild' ] = 'true';
         }
-        $_assign = isset($_attr[ 'assign' ]) ? $_attr[ 'assign' ] : null;
+        $_assign = $_attr[ 'assign' ] ?? null;
         $output = "<?php \n";
         if (isset($_assign)) {
             $output .= "ob_start();\n";
diff --git a/libs/sysplugins/smarty_internal_compile_function.php b/libs/sysplugins/smarty_internal_compile_function.php
index b05a82b7..1b73a6ba 100644
--- a/libs/sysplugins/smarty_internal_compile_function.php
+++ b/libs/sysplugins/smarty_internal_compile_function.php
@@ -157,7 +157,7 @@ class Smarty_Internal_Compile_Functionclose extends Smarty_Internal_CompileBase
             $output = "<?php echo \"/*%%SmartyNocache:{$compiler->template->compiled->nocache_hash}%%*/<?php ";
             $output .= "\\\$_smarty_tpl->smarty->ext->_tplFunction->restoreTemplateVariables(\\\$_smarty_tpl, '{$_name}');?>\n";
             $output .= "/*/%%SmartyNocache:{$compiler->template->compiled->nocache_hash}%%*/\";\n?>";
-            $output .= "<?php echo str_replace('{$compiler->template->compiled->nocache_hash}', \$_smarty_tpl->compiled->nocache_hash ?? '', ob_get_clean());\n";
+            $output .= "<?php echo str_replace('{$compiler->template->compiled->nocache_hash}', \$_smarty_tpl->compiled->nocache_hash, ob_get_clean());\n";
             $output .= "}\n}\n";
             $output .= $compiler->cStyleComment("/ {$_funcName}_nocache ") . "\n\n";
             $output .= "?>\n";
diff --git a/libs/sysplugins/smarty_internal_compile_include.php b/libs/sysplugins/smarty_internal_compile_include.php
index bf62461b..7ac9fda0 100644
--- a/libs/sysplugins/smarty_internal_compile_include.php
+++ b/libs/sysplugins/smarty_internal_compile_include.php
@@ -196,7 +196,7 @@ class Smarty_Internal_Compile_Include extends Smarty_Internal_CompileBase
         }
         $has_compiled_template = false;
         if ($merge_compiled_includes) {
-            $c_id = isset($_attr[ 'compile_id' ]) ? $_attr[ 'compile_id' ] : $compiler->template->compile_id;
+            $c_id = $_attr[ 'compile_id' ] ?? $compiler->template->compile_id;
             // we must observe different compile_id and caching
             $t_hash = sha1($c_id . ($_caching ? '--caching' : '--nocaching'));
             $compiler->smarty->allow_ambiguous_resources = true;
@@ -314,7 +314,7 @@ class Smarty_Internal_Compile_Include extends Smarty_Internal_CompileBase
             } else {
                 $basename = $tpl->source->handler->getBasename($tpl->source);
                 $sourceInfo = $tpl->source->type . ':' .
-                              ($basename ? $basename : $tpl->source->name);
+                              ($basename ?? $tpl->source->name);
             }
             // get compiled code
             $compiled_code = "<?php\n\n";
diff --git a/libs/sysplugins/smarty_internal_configfilelexer.php b/libs/sysplugins/smarty_internal_configfilelexer.php
index afb3efcb..1f9253c1 100644
--- a/libs/sysplugins/smarty_internal_configfilelexer.php
+++ b/libs/sysplugins/smarty_internal_configfilelexer.php
@@ -193,7 +193,7 @@ class Smarty_Internal_Configfilelexer
                 $this->yyTraceFILE,
                 "%sState push %s\n",
                 $this->yyTracePrompt,
-                isset($this->state_name[ $this->_yy_state ]) ? $this->state_name[ $this->_yy_state ] : $this->_yy_state
+                $this->state_name[ $this->_yy_state ] ?? $this->_yy_state
             );
         }
         array_push($this->_yy_stack, $this->_yy_state);
@@ -203,7 +203,7 @@ class Smarty_Internal_Configfilelexer
                 $this->yyTraceFILE,
                 "%snew State %s\n",
                 $this->yyTracePrompt,
-                isset($this->state_name[ $this->_yy_state ]) ? $this->state_name[ $this->_yy_state ] : $this->_yy_state
+                $this->state_name[ $this->_yy_state ] ?? $this->_yy_state
             );
         }
     }
@@ -215,7 +215,7 @@ class Smarty_Internal_Configfilelexer
                 $this->yyTraceFILE,
                 "%sState pop %s\n",
                 $this->yyTracePrompt,
-                isset($this->state_name[ $this->_yy_state ]) ? $this->state_name[ $this->_yy_state ] : $this->_yy_state
+                $this->state_name[ $this->_yy_state ] ?? $this->_yy_state
             );
         }
         $this->_yy_state = array_pop($this->_yy_stack);
@@ -224,7 +224,7 @@ class Smarty_Internal_Configfilelexer
                 $this->yyTraceFILE,
                 "%snew State %s\n",
                 $this->yyTracePrompt,
-                isset($this->state_name[ $this->_yy_state ]) ? $this->state_name[ $this->_yy_state ] : $this->_yy_state
+                $this->state_name[ $this->_yy_state ] ?? $this->_yy_state
             );
         }
     }
@@ -237,7 +237,7 @@ class Smarty_Internal_Configfilelexer
                 $this->yyTraceFILE,
                 "%sState set %s\n",
                 $this->yyTracePrompt,
-                isset($this->state_name[ $this->_yy_state ]) ? $this->state_name[ $this->_yy_state ] : $this->_yy_state
+                $this->state_name[ $this->_yy_state ] ?? $this->_yy_state
             );
         }
     }
diff --git a/libs/sysplugins/smarty_internal_debug.php b/libs/sysplugins/smarty_internal_debug.php
index 24b233e2..5c06e63c 100644
--- a/libs/sysplugins/smarty_internal_debug.php
+++ b/libs/sysplugins/smarty_internal_debug.php
@@ -220,8 +220,7 @@ class Smarty_Internal_Debug extends Smarty_Internal_Data
         $debObj->debugging = false;
         $debObj->debugging_ctrl = 'NONE';
         $debObj->error_reporting = E_ALL & ~E_NOTICE;
-        $debObj->debug_tpl =
-            isset($smarty->debug_tpl) ? $smarty->debug_tpl : 'file:' . dirname(__FILE__) . '/../debug.tpl';
+        $debObj->debug_tpl = $smarty->debug_tpl ?? 'file:' . dirname(__FILE__) . '/../debug.tpl';
         $debObj->registered_plugins = array();
         $debObj->registered_resources = array();
         $debObj->registered_filters = array();
diff --git a/libs/sysplugins/smarty_internal_extension_handler.php b/libs/sysplugins/smarty_internal_extension_handler.php
index b0761552..f6f28e31 100644
--- a/libs/sysplugins/smarty_internal_extension_handler.php
+++ b/libs/sysplugins/smarty_internal_extension_handler.php
@@ -66,7 +66,7 @@ class Smarty_Internal_Extension_Handler
     public function _callExternalMethod(Smarty_Internal_Data $data, $name, $args)
     {
         /* @var Smarty $data ->smarty */
-        $smarty = isset($data->smarty) ? $data->smarty : $data;
+        $smarty = $data->smarty ?? $data;
         if (!isset($smarty->ext->$name)) {
             if (preg_match('/^((set|get)|(.*?))([A-Z].*)$/', $name, $match)) {
                 $basename = $this->upperCase($match[ 4 ]);
diff --git a/libs/sysplugins/smarty_internal_method_getautoloadfilters.php b/libs/sysplugins/smarty_internal_method_getautoloadfilters.php
index 4145db10..00990683 100644
--- a/libs/sysplugins/smarty_internal_method_getautoloadfilters.php
+++ b/libs/sysplugins/smarty_internal_method_getautoloadfilters.php
@@ -30,7 +30,7 @@ class Smarty_Internal_Method_GetAutoloadFilters extends Smarty_Internal_Method_S
         $smarty = $obj->_getSmartyObj();
         if ($type !== null) {
             $this->_checkFilterType($type);
-            return isset($smarty->autoload_filters[ $type ]) ? $smarty->autoload_filters[ $type ] : array();
+            return ($smarty->autoload_filters[ $type ] ?? array());
         }
         return $smarty->autoload_filters;
     }
diff --git a/libs/sysplugins/smarty_internal_method_getstreamvariable.php b/libs/sysplugins/smarty_internal_method_getstreamvariable.php
index 8db39c52..397516e6 100644
--- a/libs/sysplugins/smarty_internal_method_getstreamvariable.php
+++ b/libs/sysplugins/smarty_internal_method_getstreamvariable.php
@@ -40,7 +40,7 @@ class Smarty_Internal_Method_GetStreamVariable
             fclose($fp);
             return $_result;
         }
-        $smarty = isset($data->smarty) ? $data->smarty : $data;
+        $smarty = $data->smarty ?? $data;
         if ($smarty->error_unassigned) {
             throw new SmartyException('Undefined stream variable "' . $variable . '"');
         } else {
diff --git a/libs/sysplugins/smarty_internal_method_registerfilter.php b/libs/sysplugins/smarty_internal_method_registerfilter.php
index 9719eb2b..1d69b9ac 100644
--- a/libs/sysplugins/smarty_internal_method_registerfilter.php
+++ b/libs/sysplugins/smarty_internal_method_registerfilter.php
@@ -44,7 +44,7 @@ class Smarty_Internal_Method_RegisterFilter
     {
         $smarty = $obj->_getSmartyObj();
         $this->_checkFilterType($type);
-        $name = isset($name) ? $name : $this->_getFilterName($callback);
+        $name = $name ?? $this->_getFilterName($callback);
         if (!is_callable($callback)) {
             throw new SmartyException("{$type}filter '{$name}' not callable");
         }
diff --git a/libs/sysplugins/smarty_internal_runtime_capture.php b/libs/sysplugins/smarty_internal_runtime_capture.php
index c9dca83d..84998870 100644
--- a/libs/sysplugins/smarty_internal_runtime_capture.php
+++ b/libs/sysplugins/smarty_internal_runtime_capture.php
@@ -150,7 +150,7 @@ class Smarty_Internal_Runtime_Capture
     public function getBuffer(Smarty_Internal_Template $_template, $name = null)
     {
         if (isset($name)) {
-            return isset($this->namedBuffer[ $name ]) ? $this->namedBuffer[ $name ] : null;
+            return ($this->namedBuffer[ $name ] ?? null);
         } else {
             return $this->namedBuffer;
         }
diff --git a/libs/sysplugins/smarty_internal_runtime_getincludepath.php b/libs/sysplugins/smarty_internal_runtime_getincludepath.php
index 5ae98304..6ae93989 100644
--- a/libs/sysplugins/smarty_internal_runtime_getincludepath.php
+++ b/libs/sysplugins/smarty_internal_runtime_getincludepath.php
@@ -120,14 +120,12 @@ class Smarty_Internal_Runtime_GetIncludePath
     public function getIncludePath($dirs, $file, Smarty $smarty)
     {
         //if (!(isset($this->_has_stream_include) ? $this->_has_stream_include : $this->_has_stream_include = false)) {
-        if (!(isset($this->_has_stream_include) ? $this->_has_stream_include :
-            $this->_has_stream_include = function_exists('stream_resolve_include_path'))
-        ) {
+        if (!($this->_has_stream_include ?? ($this->_has_stream_include = function_exists('stream_resolve_include_path')))) {
             $this->isNewIncludePath($smarty);
         }
         // try PHP include_path
         foreach ($dirs as $dir) {
-            $dir_n = isset($this->number[ $dir ]) ? $this->number[ $dir ] : $this->number[ $dir ] = $this->counter++;
+            $dir_n = $this->number[ $dir ] ?? ($this->number[ $dir ] = $this->counter++);
             if (isset($this->isFile[ $dir_n ][ $file ])) {
                 if ($this->isFile[ $dir_n ][ $file ]) {
                     return $this->isFile[ $dir_n ][ $file ];
@@ -153,14 +151,13 @@ class Smarty_Internal_Runtime_GetIncludePath
                 $this->_user_dirs[ $dir_n ] = $dir;
             }
             if ($this->_has_stream_include) {
-                $path = stream_resolve_include_path($dir . (isset($file) ? $file : ''));
+                $path = stream_resolve_include_path($dir . ($file ?? ''));
                 if ($path) {
                     return $this->isFile[ $dir_n ][ $file ] = $path;
                 }
             } else {
                 foreach ($this->_include_dirs as $key => $_i_path) {
-                    $path = isset($this->isPath[ $key ][ $dir_n ]) ? $this->isPath[ $key ][ $dir_n ] :
-                        $this->isPath[ $key ][ $dir_n ] = is_dir($_dir_path = $_i_path . $dir) ? $_dir_path : false;
+                    $path = $this->isPath[ $key ][ $dir_n ] ?? ($this->isPath[ $key ][ $dir_n ] = is_dir($_dir_path = $_i_path . $dir) ? $_dir_path : false);
                     if ($path === false) {
                         continue;
                     }
diff --git a/libs/sysplugins/smarty_internal_runtime_inheritance.php b/libs/sysplugins/smarty_internal_runtime_inheritance.php
index 8f7f02d5..7326fa99 100644
--- a/libs/sysplugins/smarty_internal_runtime_inheritance.php
+++ b/libs/sysplugins/smarty_internal_runtime_inheritance.php
@@ -141,7 +141,7 @@ class Smarty_Internal_Runtime_Inheritance
      */
     public function instanceBlock(Smarty_Internal_Template $tpl, $className, $name, $tplIndex = null)
     {
-        $block = new $className($name, isset($tplIndex) ? $tplIndex : $this->tplIndex);
+        $block = new $className($name, ($tplIndex ?? $this->tplIndex));
         if (isset($this->childRoot[ $name ])) {
             $block->child = $this->childRoot[ $name ];
         }
diff --git a/libs/sysplugins/smarty_internal_runtime_tplfunction.php b/libs/sysplugins/smarty_internal_runtime_tplfunction.php
index e5f8e48f..6f337cf7 100644
--- a/libs/sysplugins/smarty_internal_runtime_tplfunction.php
+++ b/libs/sysplugins/smarty_internal_runtime_tplfunction.php
@@ -21,8 +21,7 @@ class Smarty_Internal_Runtime_TplFunction
      */
     public function callTemplateFunction(Smarty_Internal_Template $tpl, $name, $params, $nocache)
     {
-        $funcParam = isset($tpl->tplFunctions[ $name ]) ? $tpl->tplFunctions[ $name ] :
-            (isset($tpl->smarty->tplFunctions[ $name ]) ? $tpl->smarty->tplFunctions[ $name ] : null);
+        $funcParam = $tpl->tplFunctions[ $name ] ?? ($tpl->smarty->tplFunctions[ $name ] ?? null);
         if (isset($funcParam)) {
             if (!$tpl->caching || ($tpl->caching && $nocache)) {
                 $function = $funcParam[ 'call_name' ];
@@ -84,8 +83,7 @@ class Smarty_Internal_Runtime_TplFunction
     public function getTplFunction(Smarty_Internal_Template $tpl, $name = null)
     {
         if (isset($name)) {
-            return isset($tpl->tplFunctions[ $name ]) ? $tpl->tplFunctions[ $name ] :
-                (isset($tpl->smarty->tplFunctions[ $name ]) ? $tpl->smarty->tplFunctions[ $name ] : false);
+            return ($tpl->tplFunctions[ $name ] ?? ($tpl->smarty->tplFunctions[ $name ] ?? false));
         } else {
             return empty($tpl->tplFunctions) ? $tpl->smarty->tplFunctions : $tpl->tplFunctions;
         }
diff --git a/libs/sysplugins/smarty_internal_template.php b/libs/sysplugins/smarty_internal_template.php
index bae22a7d..0ad053a6 100644
--- a/libs/sysplugins/smarty_internal_template.php
+++ b/libs/sysplugins/smarty_internal_template.php
@@ -221,7 +221,7 @@ class Smarty_Internal_Template extends Smarty_Internal_TemplateBase
                 $this->smarty->ext->_cacheModify->cacheModifiedCheck(
                     $this->cached,
                     $this,
-                    isset($content) ? $content : ob_get_clean()
+                    ($content ?? ob_get_clean())
                 );
             } else {
                 if ((!$this->caching || $this->cached->has_nocache_code || $this->source->handler->recompiled)
@@ -292,7 +292,7 @@ class Smarty_Internal_Template extends Smarty_Internal_TemplateBase
         $smarty = &$this->smarty;
         $_templateId = $smarty->_getTemplateId($template, $cache_id, $compile_id, $caching, $tpl);
         // recursive call ?
-        if (isset($tpl->templateId) ? $tpl->templateId : $tpl->_getTemplateId() !== $_templateId) {
+        if (($tpl->templateId ?? $tpl->_getTemplateId()) !== $_templateId) {
             // already in template cache?
             if (isset(self::$tplObjCache[ $_templateId ])) {
                 // copy data from cached object
@@ -537,7 +537,7 @@ class Smarty_Internal_Template extends Smarty_Internal_TemplateBase
         } else {
             $tpl->mustCompile = !$is_valid;
             $resource = $tpl->compiled;
-            $resource->includes = isset($properties[ 'includes' ]) ? $properties[ 'includes' ] : array();
+            $resource->includes = $properties[ 'includes' ] ?? array();
         }
         if ($is_valid) {
             $resource->unifunc = $properties[ 'unifunc' ];
@@ -579,8 +579,8 @@ class Smarty_Internal_Template extends Smarty_Internal_TemplateBase
      */
     public function _getTemplateId()
     {
-        return isset($this->templateId) ? $this->templateId : $this->templateId =
-            $this->smarty->_getTemplateId($this->template_resource, $this->cache_id, $this->compile_id);
+        return ($this->templateId ?? ($this->templateId =
+            $this->smarty->_getTemplateId($this->template_resource, $this->cache_id, $this->compile_id)));
     }
 
     /**
diff --git a/libs/sysplugins/smarty_internal_templatebase.php b/libs/sysplugins/smarty_internal_templatebase.php
index 2ffb896f..7e0fe34e 100644
--- a/libs/sysplugins/smarty_internal_templatebase.php
+++ b/libs/sysplugins/smarty_internal_templatebase.php
@@ -186,7 +186,7 @@ abstract class Smarty_Internal_TemplateBase extends Smarty_Internal_Data
         } else {
             // get template object
             $saveVars = false;
-            $template = $smarty->createTemplate($template, $cache_id, $compile_id, $parent ? $parent : $this, false);
+            $template = $smarty->createTemplate($template, $cache_id, $compile_id, ($parent ?? $this), false);
             if ($this->_objType === 1) {
                 // set caching in template object
                 $template->caching = $this->caching;
diff --git a/libs/sysplugins/smarty_internal_templatecompilerbase.php b/libs/sysplugins/smarty_internal_templatecompilerbase.php
index d6f86ac0..0f0f8812 100644
--- a/libs/sysplugins/smarty_internal_templatecompilerbase.php
+++ b/libs/sysplugins/smarty_internal_templatecompilerbase.php
@@ -428,8 +428,8 @@ abstract class Smarty_Internal_TemplateCompilerBase
                 }
                 $this->smarty->_debug->start_compile($this->template);
             }
-            $this->parent_compiler = $parent_compiler ? $parent_compiler : $this;
-            $nocache = isset($nocache) ? $nocache : false;
+            $this->parent_compiler = $parent_compiler ?? $this;
+            $nocache = $nocache ?? false;
             if (empty($template->compiled->nocache_hash)) {
                 $template->compiled->nocache_hash = $this->nocache_hash;
             } else {
@@ -1029,7 +1029,7 @@ abstract class Smarty_Internal_TemplateCompilerBase
                 $_scope = $_scopeName;
             } elseif (is_string($_scopeName)) {
                 $_scopeName = trim($_scopeName, '\'"');
-                $_scope = isset($validScopes[ $_scopeName ]) ? $validScopes[ $_scopeName ] : false;
+                $_scope = $validScopes[ $_scopeName ] ?? false;
             } else {
                 $_scope = false;
             }
diff --git a/libs/sysplugins/smarty_resource_custom.php b/libs/sysplugins/smarty_resource_custom.php
index 8d66be3a..5ff9d698 100644
--- a/libs/sysplugins/smarty_resource_custom.php
+++ b/libs/sysplugins/smarty_resource_custom.php
@@ -54,7 +54,7 @@ abstract class Smarty_Resource_Custom extends Smarty_Resource
             $source->timestamp = $mtime;
         } else {
             $this->fetch($source->name, $content, $timestamp);
-            $source->timestamp = isset($timestamp) ? $timestamp : false;
+            $source->timestamp = $timestamp ?? false;
             if (isset($content)) {
                 $source->content = $content;
             }
diff --git a/libs/sysplugins/smarty_template_compiled.php b/libs/sysplugins/smarty_template_compiled.php
index 37d8f0a9..0ceff5d2 100644
--- a/libs/sysplugins/smarty_template_compiled.php
+++ b/libs/sysplugins/smarty_template_compiled.php
@@ -230,7 +230,7 @@ class Smarty_Template_Compiled extends Smarty_Template_Resource_Base
         if (!$_template->source->handler->recompiled) {
             return file_get_contents($this->filepath);
         }
-        return isset($this->content) ? $this->content : false;
+        return ($this->content ?? false);
     }
 
     /**
diff --git a/libs/sysplugins/smarty_template_source.php b/libs/sysplugins/smarty_template_source.php
index 16b47f23..62ceeec7 100644
--- a/libs/sysplugins/smarty_template_source.php
+++ b/libs/sysplugins/smarty_template_source.php
@@ -135,9 +135,7 @@ class Smarty_Template_Source
      */
     public function __construct(Smarty $smarty, $resource, $type, $name)
     {
-        $this->handler =
-            isset($smarty->_cache[ 'resource_handlers' ][ $type ]) ? $smarty->_cache[ 'resource_handlers' ][ $type ] :
-                Smarty_Resource::load($smarty, $type);
+        $this->handler = $smarty->_cache[ 'resource_handlers' ][ $type ] ?? Smarty_Resource::load($smarty, $type);
         $this->smarty = $smarty;
         $this->resource = $resource;
         $this->type = $type;
@@ -208,6 +206,6 @@ class Smarty_Template_Source
      */
     public function getContent()
     {
-        return isset($this->content) ? $this->content : $this->handler->getContent($this);
+        return ($this->content ?? $this->handler->getContent($this));
     }
 }