Entry

Where can I learn more about regular expressions?

What are some good books on regular expressions?

What type of regular expressions are used in PHP?

Sep 1st, 2000 15:01
Ben Udall, Nathan Wallace, Gianluca Baldo, Justin Farnsworth

PHP uses the POSIX extended regular expressions as defined by POSIX
1003.2.

    http://www.php.net/manual/ref.regex.php3

The manual contains some simple examples. If you search the samples
archive you'll surelly find more. Take a look at Dario Gomes Column:

    http://www.phpbuilder.com/columns/dario19990616.php3

is a good starting point.

PHP 3.0.9+ and PHP4 include support for Perl compatible regular
expressions which are more flexible and much faster than the POSIX ones.

    http://www.php.net/manual/ref.pcre.php

This book is often recommended for learning regular expressions:

    Mastering Regular Expressions : Powerful Techniques for Perl and 
        Other Tools (Nutshell Handbook)
    by Jeffrey E. Friedl (Editor), Andy Oram (Editor).

    http://www.oreilly.com/catalog/regex/