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