在 php 中对嵌套数组进行多重排序

Question

我从几个数据库中提取了一堆内容，并编译成一个嵌套数组，如下所示：

Array
(
    [0] => Array
        (
            [id] => 3
            [published] => 1433940002
            [content] => This is some content
        )
     [1] => Array
        (
            [id] => 52
            [published] => 1433940001
            [content] => This is some more content
        )
     [2] => Array
        (
            [id] => 16
            [published] => 1433940003
            [content] => This is some more content
        )
)

由于我无法在检索内容时对内容进行排序（因为它是使用来自尽可能多的数据库的多个查询完成的），我想在数组中挖掘一个级别并按"发布"日期排序，同时保持数组的深度，所以我最终得到......

Array
(
    [0] => Array
        (
            [id] => 52
            [published] => 1433940001
            [content] => This is some more content
        )
     [1] => Array
        (
            [id] => 3
            [published] => 1433940002
            [content] => This is some content
        )
     [2] => Array
        (
            [id] => 16
            [published] => 1433940003
            [content] => This is some more content
        )
)

我很确定array_multisort（）是要走的路，但我想不出从哪里开始！有人能好心地给我指点吗？

Answer 1

多亏了

@Rizier123对我问题的监督，我自己想通了。对于找到此线程的任何其他人，这是我使用上面提供的示例数组的解决方案。

//-- get disorganised content from databases here
usort($array, "publishcmp");
//-- output organised content here
function publishcmp($a , $b){
    if ($a['published'] == $b['published']) {
        return 0;
    }
    return ($a['published'] < $b['published']) ? -1 : 1;
}

几乎逐字逐句摘自 php.net