二维数组按照指定键值排序

$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){

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

	}

	return $arr;

	}

echo "<pre>";

var_dump(arr_sort($array,'price'));