Fixes #4812: Fixed search filter

extensions/debug/CHANGELOG.md

@@ -6,6 +6,7 @@ Yii Framework 2 debug extension Change Log
 
 - Bug #1263: Fixed the issue that Gii and Debug modules might be affected by incompatible asset manager configuration (qiangxue)
 - Bug #3956: Debug toolbar was affecting flash message removal (samdark)
+- Bug #4812: Fixed search filter (samdark)
 - Enh #2299: Date and time in request list is now never wrapped (samdark)
 - Enh #3088: The debug module will manage their own URL rules now (qiangxue)
 - Enh #3103: debugger panel is now not displayed when printing a page (githubjeka)

extensions/debug/components/search/matchers/SameAs.php

@@ -26,10 +26,10 @@ class SameAs extends Base
      */
     public function match($value)
     {
-        if (!$this->partial) {
-            return (mb_strtolower($this->baseValue, 'utf8') == mb_strtolower($value, 'utf8'));
+        if ($this->partial) {
+            return mb_stripos($value, $this->baseValue, \Yii::$app->charset) !== false;
         } else {
-            return (mb_strpos(mb_strtolower($value, 'utf8'), mb_strtolower($this->baseValue, 'utf8')) !== false);
+            return strcmp(mb_strtoupper($this->baseValue, \Yii::$app->charset), mb_strtoupper($value, \Yii::$app->charset)) === 0;
         }
     }
 }