排序有什么更好的步骤

WBOY

发布： 2016-06-13 13:21:37

原创

833 人浏览过

排序有什么更好的方法
array(
[0] =>array(
'name' => "a",
'time' => '879798'),
[1] = >array(
'name' => "a9",
'time' => '85665565'),
[2] = >array(
'name' => "hdhdjd",
'time' => '8154465'),
[3] = >array(
'name' => "a",
'time' => '800000'),
[4] = >array(
'name' => "dr",
'time' => '789898'),
);

是一个已经按照time排序好的数组
现在要排这样

array(
[0] =>array(
'name' => "a",
'time' => '879798'),
[1] = >array(
'name' => "a",
'time' => '800000'),
[2] = >array(
'name' => "a9",
'time' => '85665565'),
[3] = >array(
'name' => "hdhdjd",
'time' => '8154465'),

[4] = >array(
'name' => "dr",
'time' => '789898'),
);

把name相同的在一起。以第一个出现的次序为大。

不知道有什么好方式啊，代码写的漂亮点的。

------解决方案--------------------

PHP code

$ar = array(
0 =>array(
 'name' => "a",
 'time' => '879798'),
1 => array(
 'name' => "a9",
 'time' => '856565'), //85665565 ? 示例数据有问题吧，看不出是按time排序的！
2 =>array(
 'name' => "hdhdjd",
 'time' => '815465'),
3 =>array(
 'name' => "a",
 'time' => '800000'),
4 =>array(
 'name' => "dr",
 'time' => '789898'),
);

$result = array();
$len = count($ar);
for ($i = 0; $i ';
print_r($result);

/*
Array
(
    [0] => Array
        (
            [name] => a
            [time] => 879798
        )

    [1] => Array
        (
            [0] => Array
                (
                    [name] => a
                    [time] => 800000
                )

        )

    [2] => Array
        (
            [name] => a9
            [time] => 856565
        )

    [3] => Array
        (
            [name] => hdhdjd
            [time] => 815465
        )

    [4] => Array
        (
            [name] => dr
            [time] => 789898
        )

    [5] => 
)
*/
<br><font color="#e78608">------解决方案--------------------</font><br>有点问题，修改一下：<br>

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PHP code

$result = array();
$len = count($ar);
for ($i = 0; $i <font color="#e78608">------解决方案--------------------</font><br>

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C/C++ code

<?php $arr = array(
                array(
                         'name' => "a",
                         'time' => '879798'),
                array(
                         'name' => "a9",
                          'time' => '85665565'),
                array(
                         'name' => "dr",
                          'time' => '8154465'),
                array(
                         'name' => "a",
                          'time' => '800000'),
                array(
                         'name' => "dr",
                          'time' => '789898'),
);

$names = array();
$index = array();

array_walk($arr, function($val, $key){
                        global $names;
                        global $index;
                        $names[] = $val['name'];
                        $index[] = $key;
                });

array_multisort($names, $index, $arr);
print_r($arr);
?>
 <div class="clear">
                 
              
              
        
            </div>

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