php控制数组按指定的KEY排序

php控制数组按指定的KEY排序

function array_sort($arr,$keys,$orderby='asc'){ 
    $keysvalue = $new_array = array();
    foreach ($arr as $k=>$v){
        $keysvalue[$k] = $v[$keys];
    }
    if($orderby== 'asc'){
        asort($keysvalue);
    }else{
        arsort($keysvalue);
    } 
    reset($keysvalue);
    foreach ($keysvalue as $k=>$v){
        $new_array[] = $arr[$k];
    }
    return $new_array; 
}