PHP二维数组排序

//二维数组排序
function arrSort($data , $sort){
//     $sort = array(
//         'direction' => 'SORT_DESC', //排序顺序标志 SORT_DESC 降序；SORT_ASC 升序
//         'field'     => 'age',       //排序字段
//     );
    $arrSort = array();
    foreach($data AS $uniqid => $row){
        foreach($row AS $key=>$value){
            $arrSort[$key][$uniqid] = $value;
        }
     }
     if($sort['direction']){
         array_multisort($arrSort[$sort['field']], constant($sort['direction']), $data);
     }

     return $data;
}