Php 正则表达式匹配多模式

我有这些

name

name[one]

name[one][two]

name[one][two][three]

我希望能够像这样匹配它们：

[name]

[name, one]

[name, one, two]

[name, one, two, three]

这是：

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我只是不能很好地理解它，只得到最后的方括号

你不能有动态的捕获数量；捕获的数量正好等于捕获括号对的数量（

（？：…）

不计算）。您有两个捕获括号对，这意味着您得到两个捕获-不多也不少

要处理不同数量的匹配，请使用子匹配（如果您的语言支持，则在替换为函数中）或拆分

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您没有使用编程语言进行标记，因此这是我所能做到的最具体的部分。

您不能在正则表达式中重复组。不过你可以把它们写很多遍。这适用于方括号中最多三个组。如果你愿意，你可以加更多

(\w+)\[(\w+)\](?:\[(\w+)\])?(?:\[(\w+)\])?

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您不能使用php regexp动态捕获数

为什么不写这样的东西：

explode（'['，strtr（'name[one][two][three]，[']'=>''）

-它会给你想要的结果。

这应该可以

（[\w]+）（？：\[（[\w]+）\+）？

对原始正则表达式的更改-删除了额外捕获，并在最后一次

+

之前添加了

\

    1st Capturing group ([\w]+)
        [\w]+ match a single character present in the list below
            Quantifier: Between one and unlimited times, as many times as possible, giving back as needed [greedy]
            \w match any word character [a-zA-Z0-9_]
            (?:\[([\w]+)\]\+)? Non-capturing group
        Quantifier: Between zero and one time, as many times as possible, giving back as needed [greedy]
        \[ matches the character [ literally
    2nd Capturing group ([\w]+)
        [\w]+ match a single character present in the list below
        Quantifier: Between one and unlimited times, as many times as possible, giving back as needed [greedy]
        \w match any word character [a-zA-Z0-9_]
        \] matches the character ] literally
        \+ matches the character + literally
    g modifier: global. All matches (don't return on first match)

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您使用什么语言或程序来实现正则表达式？（例如Sed、PHP、Python、Notepad++）PHP，当我完成测试时，该网站会将其转换为PHP，尝试

（[\w]+）（？：（？：\[（[\w]+）\]）\+）？

。在last+之前有一个\。这些组的最大数目是多少，还是以4结尾？动态捕获数是可能的，但只有在.NET中。但是您所说的仍然适用于这里，因为OP使用的是PHP。

    1st Capturing group ([\w]+)
        [\w]+ match a single character present in the list below
            Quantifier: Between one and unlimited times, as many times as possible, giving back as needed [greedy]
            \w match any word character [a-zA-Z0-9_]
            (?:\[([\w]+)\]\+)? Non-capturing group
        Quantifier: Between zero and one time, as many times as possible, giving back as needed [greedy]
        \[ matches the character [ literally
    2nd Capturing group ([\w]+)
        [\w]+ match a single character present in the list below
        Quantifier: Between one and unlimited times, as many times as possible, giving back as needed [greedy]
        \w match any word character [a-zA-Z0-9_]
        \] matches the character ] literally
        \+ matches the character + literally
    g modifier: global. All matches (don't return on first match)