如何为以.php结尾的文件制作正则表达式? [英] How to make a regex for files ending in .php?

问题描述

我正在尝试编写一个非常简单的正则表达式，以匹配不以.php结尾的任何文件名.我想出了以下...

I'm trying to write a very simple regular expression that matches any file name that doesn't end in .php. I came up with the following...

(.*?)(?!\.php)$

...但是，它匹配所有文件名.如果有人能指出正确的方向，我将不胜感激.

...however this matches all filenames. If someone could point me in the right direction I'd be very grateful.

推荐答案

几乎:

.*(?!\.php)....$

最后四个点确保在检查预视时有要向前看的东西.

The last four dots make sure that there is something to look ahead at, when the look-ahead is checked.

因为您对整个比赛都感兴趣，所以不需要使用括号.

The outer parentheses are unnecessary since you are interested in the entire match.

不需要.*?是不必要的，因为回溯四步比检查每一步的以下条件更有效.

The reluctant .*? is unnecessary, since backtracking four steps is more efficient than checking the following condition with every step.

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