二维数组多字段排序

sortArrByManyField.php

<?php
$array1 = array(
    0=>array('id'=>8,'name'=>'Apple','age'=> 18),
    1=>array('id'=>8,'name'=>'Bed','age'=>17),
    2=>array('id'=>5,'name'=>'Cos','age'=>16),
    3=>array('id'=>5,'name'=>'Cos','age'=>14)
);
function sortArrByManyField(){
    $args = func_get_args();
    if(empty($args)){
        return null;
    }
    $arr = array_shift($args);
    if(!is_array($arr)){
        throw new Exception("第一个参数不为数组");
    }
    foreach($args as $key => $field){
        if(is_string($field)){
            $temp = array();
            foreach($arr as $index=> $val){
                $temp[$index] = $val[$field];
            }
            $args[$key] = $temp;
        }
    }
    $args[] = &$arr;//引用值
    call_user_func_array('array_multisort',$args);
    return array_pop($args);
}
$arr = sortArrByManyField($array1,'id',SORT_ASC,'name',SORT_ASC,'age',SORT_DESC);
print_r($arr);
exit;