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Connection.php

@@ -390,9 +390,9 @@ class Connection extends Component
                 PDO::ATTR_TIMEOUT => $this->timeout,
                 PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES ' . $this->charset
             ]);
-        array_walk($this->attributes, function ($value, $key) use ($pdo) {
+        foreach ($this->attributes as $key => $attribute) {
-            $pdo->setAttribute($key, $value);
+            $pdo->setAttribute($key, $attribute);
-        });
+        }
         return $pdo;
     }