二维数组排序

/*$arr 数组
 * $name 排序依据列
 * $asc asc正序 desc 倒序
 * */
function arr_sort($arr,$name,$type='asc'){
    $temp=array();
    foreach($arr as $v){
        $temp[$v[$name]]=$v;
    }
    if($type=='asc'){
        ksort($temp);
    }else{
        krsort($temp);
    }
    return $temp;
}
$attr2=array(
    array("id"=>1,"name"=>"liming","age"=>21),
    array("id"=>3,"name"=>"daten","age"=>27),
    array("id"=>2,"name"=>"xiaohua","age"=>18),
);
echo "<pre>";
var_dump(arr_sort($attr2,"age"));