...

framework/db/ar/ActiveFinder.php

@@ -300,7 +300,7 @@ class ActiveFinder extends \yii\base\Object
 		}
 
 		if ($config instanceof \Closure) {
-			call_user_func($config, $child->query);
+			$config($child->query);
 		} else {
 			foreach ($config as $name => $value) {
 				$child->query->$name = $value;

framework/db/ar/ActiveRecord.php

@@ -574,7 +574,7 @@ abstract class ActiveRecord extends Model
 		}
 		$relation = clone $relation;
 		if ($params instanceof \Closure) {
-			call_user_func($params, $relation);
+			$params($relation);
 		} else {
 			foreach ($params as $name => $value) {
 				$relation->$name = $value;

framework/util/ArrayHelper.php

@@ -77,7 +77,7 @@ class ArrayHelper
 	public static function get($array, $key, $default = null)
 	{
 		if ($key instanceof \Closure) {
-			return call_user_func($key, $array, $default);
+			return $key($array, $default);
 		} elseif (is_array($array)) {
 			return isset($array[$key]) || array_key_exists($key, $array) ? $array[$key] : $default;
 		} else {