PHP對象轉數組

//對象轉數組
function objtoarr($obj){
   $ret = array();
   foreach($obj as $key =>$value){
      if(gettype($value) == 'array' || gettype($value) == 'object'){
         $ret[$key] = objtoarr($value);
      }
      else{
         $ret[$key] = $value;
      }
   }
   return $ret;
}