Php preg_匹配所有已命名的子模式

我想不出下面的表达式：

preg_match_all('/[(?P<slug>\w+\-)\-(?P<flag>(m|t))\-(?P<id>\d+)]+/', $slugs, $matches);

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您的表达式看起来像是试图将路径元素拆分为slug、flag和id部分。它失败了，因为括号

[…]

用于匹配字符，但在这里，它似乎用于将内容放在一起，比如括号。它也无法正确获取slug部分，因为它不允许超过一个系列的word

\w

和dash

-

字符。即，该部分与“article-”匹配，但与“article slug one-”不匹配

也许这就是你想要的

$slugs = 'article-slug-one-m-111617/article-slug-two-t-111611/article-slug-three-t-111581/article-slug-four-m-111609/';

preg_match_all('/(?P<slug>[\w-]+)\-(?P<flag>[mt])\-(?P<id>\d+)/', $slugs, $matches);

echo "First slug : " . $matches['slug'][0], PHP_EOL;
echo "Second flag: " . $matches['flag'][1], PHP_EOL;
echo "Third ID   : " . $matches['id'][2], PHP_EOL;
print_r($matches);

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你的问题是什么。你想做什么？给我们一个例子，说明你想在PHP手册的文档章节中做什么。每件事都在这一页上解释了。

$slugs = 'article-slug-one-m-111617/article-slug-two-t-111611/article-slug-three-t-111581/article-slug-four-m-111609/';

preg_match_all('/(?P<slug>[\w-]+)\-(?P<flag>[mt])\-(?P<id>\d+)/', $slugs, $matches);

echo "First slug : " . $matches['slug'][0], PHP_EOL;
echo "Second flag: " . $matches['flag'][1], PHP_EOL;
echo "Third ID   : " . $matches['id'][2], PHP_EOL;
print_r($matches);

First slug : article-slug-one
Second flag: t
Third ID   : 111581

Array
(
    [0] => Array
        (
            [0] => article-slug-one-m-111617
            [1] => article-slug-two-t-111611
            [2] => article-slug-three-t-111581
            [3] => article-slug-four-m-111609
        )

    [slug] => Array
        (
            [0] => article-slug-one
            [1] => article-slug-two
            [2] => article-slug-three
            [3] => article-slug-four
        )

    [1] => Array
        (
            [0] => article-slug-one
            [1] => article-slug-two
            [2] => article-slug-three
            [3] => article-slug-four
        )

    [flag] => Array
        (
            [0] => m
            [1] => t
            [2] => t
            [3] => m
        )

    [2] => Array
        (
            [0] => m
            [1] => t
            [2] => t
            [3] => m
        )

    [id] => Array
        (
            [0] => 111617
            [1] => 111611
            [2] => 111581
            [3] => 111609
        )

    [3] => Array
        (
            [0] => 111617
            [1] => 111611
            [2] => 111581
            [3] => 111609
        )

)