人生中第一个递归函数，把object转成array

应用范围：淘宝api中用的

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;}