如何解决意外的PHP Usort结果
我有一个包含文件的数组。我想按它们的最小值对它们进行排序（我将在下面说明）。
这是数组的示例：
$files = array(
array(
'name' => "DevTools/tools/files/design/js/custom/http_build_query.js",'range' => array(
'min' => 0
)
),array(
'name' => "DevTools/tools/files/design/js/custom/Form.js",array(
'name' => "DevTools/tools/files/design/js/custom/VanillaJS.js",array(
'name' => "resources/js/plugins/jquery.js"
),array(
'name' => "resources/js/plugins/jquery-ui.js"
),array(
'name' => "resources/js/plugins/popper.js"
),array(
'name' => "resources/js/plugins/bootstrap-v4/index.js",'range' => array(
'min' => 800
)
),array(
'name' => "resources/js/plugins/bootstrap-v4/util.js",array(
'name' => "resources/js/plugins/bootstrap-v4/dropdown.js",'range' => array(
'min' => 200
)
),array(
'name' => "resources/js/plugins/bootstrap-v4/collapse.js",array(
'name' => "resources/js/custom/global.js"
),array(
'name' => "layouts/cms/.js/+0.js",array(
'name' => "resources/js/plugins/module/delete.js"
),array(
'name' => "resources/js/plugins/module/form.submit.js"
),array(
'name' => "resources/js/plugins/module/piece.image.js"
),array(
'name' => "resources/js/plugins/select2.js"
)
);
这很容易理解。我们有所有文件的名称。其中一些具有[范围] [分钟]。
我需要做的是保持它们的顺序，但是只对同一文件夹中[range] [min]的 个文件进行排序，因此我们按[min]对其重新排序。
我的代码
所以我使用这个功能：
usort($files,function (array $a,array $b) {
if (!isset($a['range']) || !isset($b['range'])
|| dirname($a['name']) != dirname($b['name'])
|| $a['range']['min'] == $b['range']['min']) {
return 0;
}
return $a['range']['min'] <=> $b['range']['min'];
});
我刚才所说的完全做到了。因此，只有那些顺序正确地重新排序，如您在此处看到的那样：
[6] => Array
(
[name] => resources/js/plugins/bootstrap-v4/util.js
[range] => Array
(
[min] => 0
)
)
[7] => Array
(
[name] => resources/js/plugins/bootstrap-v4/collapse.js
[range] => Array
(
[min] => 0
)
)
[8] => Array
(
[name] => resources/js/plugins/bootstrap-v4/dropdown.js
[range] => Array
(
[min] => 200
)
)
[9] => Array
(
[name] => resources/js/plugins/bootstrap-v4/index.js
[range] => Array
(
[min] => 800
)
)
哪个很棒。
问题
现在，我在$ files数组中添加以下内容：
array(
'name' => "resources/js/plugins/module/piece.images.js"
)
将其追加到$ files中所需的任何位置，usort将对 entire 数组重新排序，没有逻辑：
Array
(
[0] => Array
(
[name] => DevTools/tools/files/design/js/custom/http_build_query.js
[range] => Array
(
[min] => 0
)
)
[1] => Array
(
[name] => resources/js/plugins/bootstrap-v4/collapse.js
[range] => Array
(
[min] => 0
)
)
[2] => Array
(
[name] => resources/js/plugins/select2.js
)
[3] => Array
(
[name] => resources/js/plugins/module/piece.image.js
)
[4] => Array
(
[name] => resources/js/plugins/module/form.submit.js
)
[5] => Array
(
[name] => resources/js/plugins/module/delete.js
)
[6] => Array
(
[name] => layouts/cms/.js/+0.js
[range] => Array
(
[min] => 0
)
)
[7] => Array
(
[name] => resources/js/plugins/bootstrap-v4/util.js
[range] => Array
(
[min] => 0
)
)
[8] => Array
(
[name] => resources/js/custom/global.js
)
[9] => Array
(
[name] => resources/js/plugins/bootstrap-v4/dropdown.js
[range] => Array
(
[min] => 200
)
)
[10] => Array
(
[name] => DevTools/tools/files/design/js/custom/Form.js
[range] => Array
(
[min] => 0
)
)
[11] => Array
(
[name] => resources/js/plugins/bootstrap-v4/index.js
[range] => Array
(
[min] => 800
)
)
[12] => Array
(
[name] => resources/js/plugins/popper.js
)
[13] => Array
(
[name] => resources/js/plugins/jquery-ui.js
)
[14] => Array
(
[name] => resources/js/plugins/jquery.js
)
[15] => Array
(
[name] => DevTools/tools/files/design/js/custom/VanillaJS.js
[range] => Array
(
[min] => 0
)
)
[16] => Array
(
[name] => resources/js/plugins/module/piece.images.js
)
)
我不知道为什么会这样。如果您能找到原因，请问是否有解决方案？
如果我不能很好地解释，请在评论中进行澄清。
因此，我需要做的是保持它们的顺序，但是只对同一文件夹中[range] [min]的 个文件进行排序，因此我们按[min]重新排序这些文件。 / p>
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