PCRE 是一组实现 Perl 5 兼容正则表达式的库函数，它使用相同的语法和语义。该库有自己的 API 和 POSIX 正则表达式 API 的包装器函数，并且是免费的，即使用于构建商业软件。PCRE 最初为 Exim MTA 编写，现在被多个高知名度的开源项目使用，包括 Apache、PHP、KDE 等。
PCRE - Perl Compatible Regular Expressions
The PCRE library is a set of functions that implement regular expression pattern matching using the same syntax and semantics as Perl 5. PCRE has its own native API, as well as a set of wrapper functions that correspond to the POSIX regular expression API. The PCRE library is free, even for building commercial software.
PCRE was originally written for the Exim MTA, but is now used by many high-profile open source projects, including Apache, PHP, KDE, Postfix, Analog, and Nmap. Some other interesting projects using PCRE include Ferite, Onyx, Hypermail, Leafnode, and Askemos.
Download
The latest release of the PCRE library is 6.4. You can download it from its official home via anonymous FTP, or via HTTP or FTP from SourceForge.
- ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/
- http://sourceforge.net/project/showfiles.php?group_id=10194
- ftp://ftp.sourceforge.net/pub/sourceforge/p/pc/pcre/
Contributed source code, including C++ wrappers and sample Makefiles, is also available from the FTP site.
Finally, a precompiled Windows port of PCRE is available, courtesy the GnuWin32 project.
Documentation
You can read the text version of the PCRE man pages. For Perl 5 regular expression syntax, read the Perl regular expressions man page.
The distribution itself also contains a README and the BSD LICENSE. If you are upgrading, read the NEWS and ChangeLog files.
Author
The PCRE library was written by Philip Hazel:
| E-mail local part: | ph10 |
| E-mail domain: | cam.ac.uk |
Last modified January 30, 2006 - webmaster@pcre.org
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