[\ S \ s] *在PHP的正则表达式中是什么意思? [英] What does [\S\s]* mean in regex in PHP?

问题描述

PHP的正则表达式中的[\s\S]*是什么意思? [\s\S]*实际上是否匹配每个与.*相同的字符串?

What is meant by [\s\S]* in regex in PHP? Does [\s\S]* actually match every string the same as .*?

推荐答案

默认情况下，.与换行符不符-[\s\S]是解决该问题的工具.
这在JavaScript中很常见，但是在PHP中，您可以使用/s标志使点与所有字符匹配.

By default . doesn't match new lines - [\s\S] is a hack around that problem.
This is common in JavaScript, but in PHP you can use the /s flag to to make the dot match all characters.

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