排序在PHP关联数组 [英] Sorting an associative array in PHP
本文介绍了排序在PHP关联数组的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我在这个格式的数组:
Array
(
[0] => Array
(
[text] => tests
[language] =>
[advertiserCompetitionScale] => 5
[avgSearchVolume] => 7480000
[lastMonthSearchVolume] => 9140000
)
[1] => Array
(
[text] => personality tests
[language] =>
[advertiserCompetitionScale] => 5
[avgSearchVolume] => 165000
[lastMonthSearchVolume] => 201000
)
[2] => Array
(
[text] => online tests
[language] =>
[advertiserCompetitionScale] => 5
[avgSearchVolume] => 246000
[lastMonthSearchVolume] => 301000
)
)
我怎么能进行排序在该格式的数组,在 avgSearchVolume
字段的降序排列?是否有一个内置的功能呢?
How can I sort an array in that format, in the descending order of the avgSearchVolume
field? Is there a built in function for this?
推荐答案
Use usort
and supply your own function to do the ordering, e.g.
function cmp($a, $b)
{
return $b['avgSearchVolume'] - $a['avgSearchVolume'];
}
usort($array, "cmp");
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