While looking around for training material on Regular expressions, I came across the following tutorials on Regular expressions in PHP.
- PHPBuilder.com, the best resource for PHP tutorials, templates, PHP manuals, content management systems, scripts, classes and more.
- Zend: Using Perl Compatible Regular Expressions with PHP
- SitePoint: Using Regular Expressions in PHP
- Mastering Regular Expressions in PHP by Dennis Pallett
- Regular Expressions by Karen Friesen, Rod Apeldoorn