Fixes yiisoft#12703: Fixed StringHelper::truncateHtml() non functio…

…nal when dom PHP extension is disabled

framework/CHANGELOG.md

@@ -13,6 +13,7 @@ Yii Framework 2 Change Log
 - Bug #11771: Fixed semantics of `yii\di\ServiceLocator::__isset()` to match the behavior of `__get()` which fixes inconsistent behavior on newer PHP versions (cebe)
 - Bug #12213: Fixed `yii\db\ActiveRecord::unlinkAll()` to respect `onCondition()` of the relational query (silverfire)
 - Bug #12681: Changed `data` column type from `text` to `blob` to handle null-byte (`\0`) in serialized RBAC rule properly (silverfire)
+- Bug #12703: Fixed `StringHelper::truncateHtml()` non functional when dom PHP extension is disabled (samdark)
 - Bug #12714: Fixed `yii\validation\EmailValidator` to prevent false-positives checks when property `checkDns` is set to `true` (silverfire)
 - Bug #12735: Fixed `yii\console\controllers\MigrateController` creating multiple primary keys for field `bigPrimaryKey:unsigned` (SG5)
 - Bug #12791: Fixed `yii\behaviors\AttributeTypecastBehavior` unable to automatically detect `attributeTypes`, triggering PHP Fatal Error (klimov-paul)

framework/helpers/BaseStringHelper.php

@@ -154,7 +154,7 @@ protected static function truncateHtml($string, $count, $suffix, $encoding = fal
         $config = \HTMLPurifier_Config::create(null);
         $config->set('Cache.SerializerPath', \Yii::$app->getRuntimePath());
         $lexer = \HTMLPurifier_Lexer::create($config);
-        $tokens = $lexer->tokenizeHTML($string, $config, null);
+        $tokens = $lexer->tokenizeHTML($string, $config, new \HTMLPurifier_Context());
         $openTokens = [];
         $totalCount = 0;
         $truncated = [];