Fix #20423: strcmp() Passing null to parameter 2 ($string2) of type string is deprecated

framework/CHANGELOG.md

@@ -25,6 +25,7 @@ Yii Framework 2 Change Log
 - Enh #20397: Add PHPStan/Psalm annotations for `ArrayHelper::merge` (samuelrajan747)
 - Enh #20413: Add PHPStan/Psalm annotations for `Action`, `ActionEvent`, `Application`, `DynamicModel` and `InlineAction` (max-s-lab)
 - Enh #20416: Add `PHPStan`/`PSalm` annotation for `owner` property in `Behavior` class (terabytesoftw)
+- Bug #20423: `strcmp()` Passing `null` to parameter `2` ($string2) of type string is deprecated (terabytesoftw)
 
 
 2.0.52 February 13, 2025

framework/web/UrlRule.php

@@ -97,6 +97,8 @@ class UrlRule extends BaseObject implements UrlRuleInterface
      * @var string|null the URL suffix used for this rule.
      * For example, ".html" can be used so that the URL looks like pointing to a static HTML page.
      * If not set, the value of [[UrlManager::suffix]] will be used.
+     * Default values should be strings. Non-string values will be automatically converted to
+     * strings for comparison with URL parameters.
      */
     public $suffix;
     /**
@@ -494,7 +496,7 @@ class UrlRule extends BaseObject implements UrlRuleInterface
                     return false;
                 }
             }
-            if (strcmp($params[$name], $value) === 0) { // strcmp will do string conversion automatically
+            if (strcmp($params[$name], (string) $value) === 0) {
                 unset($params[$name]);
                 if (isset($this->_paramRules[$name])) {
                     $tr["<$name>"] = '';