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Advanced Regular Expression Tips and Techniques | Nettuts+

http://net.tutsplus.com/tutorials/php/advanced-regular-expression-tips-and-techniques/ Twice a month, we revisit some of our readers’ favorite posts from throughout the history of Nettuts+. Regular Expressions are the Swiss Army knife for searching through information for certain patterns.
Enter a regular expression in the top text area; double-click in the bottom area to enter the target input to match. As soon as you tab, [esc], or click out of the bottom area, matching will begin. You can choose between Perl/PHP-like or Java regular expression syntax, and whether the target text is highlighted to show matches, edits, replacements, or splits.

Regex Powertoy (interactive regular expressions)

http://regex.powertoy.org/
http://answers.oreilly.com/topic/985-using-regular-expressions-in-php-and-javascript/ Every regular exp ression must be enclosed in slashes.

Using Regular Expressions in PHP and JavaScript - O&#039;Reilly Answers

Reggy - Home

If you would like to show your support for Reggy, please email me (samsouder at gmail dot com) and say “Hi” or submit a bug or a feature request. http://reggyapp.com/
The title is a misnomer - there is no gentle beginning to regular expressions. You are either into hieroglyphics big time - in which case you will love this stuff - or you need to use them, in which case your only reward may be a headache. http://www.zytrax.com/tech/web/regex.htm

Regular Expressions - a Simple User Guide

regexxer is a nifty GUI search/replace tool featuring Perl-style regular expressions.

regexxer Search Tool

http://regexxer.sourceforge.net/
http://www.digitalvolcano.co.uk/content/textcrawler TextCrawler is a fantastic tool for anyone who works with text files. This cool utility enables you to instantly find and replace words and phrases across multiple files and folders.

TextCrawler - Search and Replace across files - Freeware

http://homepage.mac.com/roger_jolly/software/

RegExhibit

ZipCleaner 1.0 Although being able to create zip files right in the Finder is very convenient, they have the disadvantage of often including invisible files. These can be handy on the Mac, but if you send them to people using other operating systems, e.g.

reggy - Google Code

http://code.google.com/p/reggy/ Reggy 2.0 is being rewritten from the ground up!
The Regex Coach is a graphical application for Windows which can be used to experiment with (Perl-compatible) regular expressions interactively.

The Regex Coach - interactive regular expressions

Regular Expressions Cheat Sheet

(Taken from http://www.crazygrrl.com/weav/reference.php3 and modified to fit on one page, at least in Opera 8. Ow, and damn you for blogmarking this, Mathias ! ;] Can't.