How PHP is sorted based on the key values in the array

Source: Internet
Author: User

  'aa','price'=>1050),    array('name'=>'bb','price'=>4300),    array('name'=>'cc','price'=>3100),    array('name'=>'dd','price'=>4900),    array('name'=>'ee','price'=>960),    array('name'=>'ff','price'=>6299),    array('name'=>'gg','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];    }    print_r($arr);}arr_sort($array,'price');

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