你如何对一组对象进行natsort? [英] How do you natsort an array of objects?

问题描述

我有一个看起来像这样的对象数组:

I have an array of objects that looks like this:

Array
(    
[5] => stdClass Object
    (
        [id] => 173
        [name] => Silo 1
    )

[6] => stdClass Object
    (
        [id] => 174
        [name] => Silo 10
    )

[7] => stdClass Object
    (
        [id] => 175
        [name] => Silo 11
    )

[11] => stdClass Object
    (
        [id] => 179
        [name] => Silo 2
    )

[12] => stdClass Object
    (
        [id] => 180
        [name] => Silo 3
    )
)

我想弄清楚如何根据 name

我尝试过的事情:

usort($result, function($a, $b)
{
    if ($a->name == $b->name) return 0 ;
    return ($a->name < $b->name) ? -1 : 1 ;
});

和

usort($result, function($a, $b)
{
    strnatcmp($a->name, $b->name); // return (0 if ==), (-1 if <), (1 if >)
});

什么都没有给我我想要的输出:

Nothing is giving me my desired output which I want to be this:

Silo 1
Silo 2
Silo 3
Silo 10
Silo 11

我做错了什么?

推荐答案

你没有返回你的 strnatcmp 结果，所以 PHP 将假定一个 NULL 返回值:

You're not returning your strnatcmp results, so the PHP will assume a NULL return value:

usort(...) {
   return strnatcmp(...);
   ^^^^^^
}

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