PHP 数组仅获取那些 elements/values 其键匹配特定模式的数组

Question

我有一个多维嵌套数组，如下所示：

Array
(
    [_edit_lock] => Array
        (
            [0] => 1504299434:6
        )

    [_edit_last] => Array
        (
            [0] => 6
        )
    [additional_photos_0_gallery_image_1] => Array
        (
            [0] => 77556
        )
    [additional_photos_0_gallery_image_2] => Array
        (
            [0] => 77567
        )
    [additional_photos_0_gallery_image_3] => Array
        (
            [0] => 73768
        )
    ....
)

现在我只需要获取给定数组的那些元素（在不更改当前数组的单独数组中），其键与特定模式匹配，如下所示：

additional_photos_[any_number]_gallery_image_[any_number]

如何才能使用数组函数之一并避免 foreach 循环？

Answer 1

只需使用 array_filter 和 preg_match。

return array_filter($data, function($key) {
    return preg_match('~^additional_photos_[0-9]+_gallery_image_[0-9]+$~', $key);
}, ARRAY_FILTER_USE_KEY);

PHP 数组仅获取那些 elements/values 其键匹配特定模式的数组

PHP Array only get those elements/values whose keys match a particular pattern

php

regex

arrays

pattern-matching

array-key