php 对象转数组

//参考网上 但是别人给的方法有错误的地方
public function eleme_callback(){
    $res = (object) array('1' => 'foo');
    $data = $this->object_array($res);
}

public function object_array($array) {  
    if(is_object($array)) {  
        $array = (array)$array;  
    } 
    if(is_array($array)) {
        foreach($array as $key=>$value) {  
            $array[$key] = $value;  
        }  
    }  
    return $array;  
}