[fw-mvc] regular expression ? where to start

hi

i know a lot in php and zend framework
ivbeen working with them for 2 or 3 years

but

i know nothing about REGEX  and regular expression stuff

any body help me how to start learning to uses regex?

does zf supports it?

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Sincerely
Sina Miandashti
MuSicBasE.ir & InvisionPower.ir Admin