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PHP二维数组排序问题详解(数组键值排序)

Jun 08, 2016 pm 05:23 PM
array gt nbsp price sort

在php中数组排序一直是一个大家论证的话题,下面我来给各位朋友详细介绍关于在php中二维数组排序问题,有需要了解的数组排序的朋友可参考。

<script>ec(2);</script>

根据某个键值对二维数组进行排序是个常见问题,这里总结一个函数,可同时对两个键值分别排序,当然想要更多的话就自行解决吧。


但是如果需要排序的数组是一个二维数组,需要按照数组的键值排序,如下面这个二维数组,需要按照sort键名来排序,那么array_multisort() 就无法直接实现了:


实例一,

 代码如下 复制代码


$arr = array(
array(
'sort' => 3,
'a' => 'a',
'b' => 'b'
),
array(
'sort' => 5,
'a' => 'a',
'b' => 'b'
),
array(
'sort' => 1,
'a' => 'a',
'b' => 'b'
)
);


这样array_multisort()不不能生效了,

我们可以对函数进行升级一下,根据指定键值进行排序

 代码如下 复制代码

function array_sort($arr,$key1,$sort1='asc',$key2='',$sort2='asc'){
    if (!is_array($arr)){
        return $arr;
    }
    foreach($arr AS $key => $row){
        $temp[$key] = $row[$key1];
    }
    $sort1 = $sort1 == 'asc' ? SORT_ASC : SORT_DESC;
    if(!$key2){
        array_multisort($temp, $sort1,$arr);
    } else {
        foreach($arr AS $key => $row){
            $temp2[$key] = $row[$key2];
        }
        $sort2 = $sort2 == 'asc' ? SORT_ASC : SORT_DESC;
        array_multisort($temp, $sort1,$temp2,$sort2,$arr);
    }
    return $arr;
}


实例二

 代码如下 复制代码


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

 

$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)
);

$ShoppingList = array_sort($array,'price');
print_r($ShoppingList);

面是对$array这个二维数组按照'price'从低到高的排序。

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