用PHP编译正则表达式 [英] Compile regex in PHP
问题描述
PHP中是否有一种编译正则表达式的方法，以便可以将其与多个字符串进行比较而无需重复编译过程?其他主要语言也可以做到这一点-Java，C#，Python，Javascript等.
Is there a way in PHP to compile a regular expression, so that it can then be compared to multiple strings without repeating the compilation process? Other major languages can do this -- Java, C#, Python, Javascript, etc.
推荐答案
Perl兼容的正则表达式库可能已经针对您的用例进行了优化，而没有像其他语言一样提供Regex类:
The Perl-Compatible Regular Expressions library may have already be optimized for your use case without providing a Regex class like other languages do:
此扩展程序维护编译后的正则表达式的全局每线程缓存(最多4096个).
This extension maintains a global per-thread cache of compiled regular expressions (up to 4096).
Imran 所描述的学习修饰符可以在其中存储编译后的表达式电话.
This is how the study modifier which Imran described can store the compiled expression between calls.
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