PHP按子值对数组进行排序 [英] php sort array by sub-value

问题描述

这是我的数组，我认为我应该使用usort，但我不知道如何使它工作.

here is my array, I think i should be using usort but i have no idea how to get that working.

Array
(
    [javascript] => Array
        (
            [core] => Array
                (
                    [0] => Array
                        (
                            [file] => /path/to/file.js
                            [weight] => 0
                        )

                    [1] => Array
                        (
                            [file] => /path/to/file2.js
                            [weight] => 1
                        )

                )

        )

)

我想按权重值对核心索引进行排序，其他文件和权重也将添加并排序.

I would like to sort the index of core by the weight value, other files and weights will be added and sorted after also.

推荐答案

usort($array['javascript']['core'], function($a, $b) {
    return $a['weight'] - $b['weight'];
});

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