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Home Backend Development PHP Tutorial PHP中使用正则表达式的问题

PHP中使用正则表达式的问题

Jun 06, 2016 pm 08:43 PM
php regular expression

今天看PHP的正则表达式,其中有一个PCRE模式。我的意思是,正则表达式还有各种不同的模式?
比如在某种情况下点号代码A,但是在另外一种情况下点号就代表B么?
那么现在主流的正则表达式模式是什么呢?

回复内容:

今天看PHP的正则表达式,其中有一个PCRE模式。我的意思是,正则表达式还有各种不同的模式?
比如在某种情况下点号代码A,但是在另外一种情况下点号就代表B么?
那么现在主流的正则表达式模式是什么呢?

主要就是PCRE和POSIX两种,根据环境来定,基本思路是一样的,只是一些细节不同,有不了解的地方,看看PHP帮助文档里的对应说明就行了。

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