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@Mejicano, I use regexr.com/v1 to test new regex expressions. They've a newer version in javascript, but it doesn't support lookbehinds.

Is there any tool that may help me easily create regex to use with preg_match_all, some kind of designer? I frequently need to use preg_match_all and I'm not that good, I'm not a programmer either. Or at least a link where I could learn advaced stuff in a easy way. Thank you

@sheila: to find the date in a string, you can use this: @([a-zA-Z]{3}/[0-9]{1,2}/[0-9]{1,2})@ to find the parts of the date you can use this: @([a-zA-Z]{3})/([0-9]{1,2})/([0-9]{1,2})@

I am not able to find a right pattern for a date like: Feb/8/2012. Can anyone tell me how should it be?

When a slash is met, your script doubles the slash, leaving some specific cases buggy. Tested with pattern /"(([^"]|\\")*)"/ and subject "test1,test2" ,"261771494\"543256","hereismytest.tpl", "true"

Excellent site and an excellent service! Thank you :o)