特定正则表达式的帮助 - 不包含某些字符串 [英] Help With Particular Regular Expression - Not Containing Some String

问题描述

用正则表达式怎么说:

以大写字母开头的字符串的任何部分，至少包含一个空格字符，不包含字符串
" _ "(空格下划线空格)，并以字符串!!!"结尾(没有引号)?

Any portion of a string beginning with a capital letter, containing at least one space character, not containing the string
" _ " (space underscore space), and ending with the string "!!!" (without the quotes)?

我在处理不包含"部分时遇到问题.

I am having trouble with the "not containing" part.

这是我目前所拥有的:

[A-Z].* .*!!!

如何修改它以同时指定不包含‘_’"?

How do I modify this to also specify "Not containing ' _ '"?

它不需要是特定的字符串_".我怎么能说不包含"任何字符串?例如不包含狗"?

It does not need to be the specific string " _ ". How can I say "not containing" ANY string? For instance not containing "dog"?

编辑:我希望解决方案与 Php 的preg_replace"兼容

Edit: I'd like the solution to be compatible with Php's "preg_replace"

编辑:示例:

_"的示例:

ABC xyz！！！<---匹配

Abc xyz!!! <---Matches

世界你好！！！<---匹配

Hello World!!! <---Matches

有_空格下划线空格！！！<--- 不匹配

Has _ Space Underscore Space!!! <--- Does Not Match

狗"的示例:

什么狗！！！<--- 不匹配，(包含狗")

What a dog!!! <--- Does not match, (contains "dog")

世界你好！！！<--- 匹配

Hello World!!! <--- Matches

推荐答案

x(?!y) 表达式仅在后面没有紧跟 x 时才匹配 x代码>y.所以，这似乎是你想要的:

The x(?!y) expression matches x only if it is not immediately followed by y. So, this seems to be the thing you want:

[A-Z](?!%s)(.(?!%s))* (.(?!%s))*!!!

其中 %s 是您的禁止字符串.

Where %s is your forbidden string.

这篇关于特定正则表达式的帮助 - 不包含某些字符串的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！