PHP Developers Network

http://www.txt2re.com/index-php.php3
Best thing this side of cheese! Saved my life many a time this has.

Cheers,

Darkzaelus

Try the regexcoach. It is a windows application and you can try out various patterns on sample text.

regular expression for the only strings that are not generated over {a,b} by the expression (a+ b)* a (a+b)*
reasoning please

This thread is not meant to post questions. Try posting a new thread in the regex forum. Note that the "question" in it's current form, is pretty meaningless and is not likely to get any helpful answers, I think.

For those using mb_ereg functions with the default Ruby syntax Rubular gives immediate feedback on the results of an expression tested against input. I've been using it to test against all kinds of UTF-8 input (Chinese, Hebrew, Korean, etc).

This one is new: a way to visualize regular expressions as a diagram. It's an Eclipse plugin called Graphrex: http://crotonresearch.com/graphrex

The website says it is useful for understanding regular expressions, and for documenting existing ones. The diagrams can be exported as images.

Cheers

I absolutely hated having to do anything besides a very simple expression until I found this.

What little it does cost, has saved me HOURS of time and taught me a lot! Other developers at work will come to me for complex items since they know I can build it and test it in just a minute or two with this.

-Greg

i found http://php.toolregex.com/
it for test online for javascript and php

And here is another usefull online tool http://www.regex-builder.com/ The idea is to generate regex'es based on entered text with captured groups support. For now is in beta stage because i want more user reviews for usability

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http://www.regex-builder.com/ online regular expression composer based on text analysis

For email regex: http://emailregex.com