php二维数组按照键值排序的方法

<?php
    $array = array(

        array('name'=>'手机','brand'=>'诺基亚','price'=>1050),

        array('name'=>'笔记本电脑','brand'=>'lenovo','price'=>4300),

        array('name'=>'剃须刀','brand'=>'飞利浦','price'=>3100),

        array('name'=>'跑步机','brand'=>'三和松石','price'=>4900),

        array('name'=>'手表','brand'=>'卡西欧','price'=>960),

        array('name'=>'液晶电视','brand'=>'索尼','price'=>6299),

        array('name'=>'激光打印机','brand'=>'惠普','price'=>1200)

    );


    function arr_sort($array,$key,$order="asc"){//asc是升序 desc是降序

        $arr_nums=$arr=array();

        foreach($array as $k=>$v){

            $arr_nums[$k]=$v[$key];

        }

        if($order=='asc'){

            asort($arr_nums);

        }else{

            arsort($arr_nums);

        }

        foreach($arr_nums as $k=>$v){

            $arr[]=$array[$k];

        }

        return $arr;

}

arr_sort($array,'price');

print_r($array);



?>