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Filtering regular expressions from malicious users.

Posted: Thu Sep 18, 2008 12:34 pm
by rabw
Hi everyone,

Firstly apologies if this is not a problem, I can't find anything extensive to say it is or isn't anywhere... only a few places I've stumbled upon say don't allow a user to enter things such as ";rm...." etc etc.

I wouldn't be surprised if this is an old thing, and by default newer versions of php are now setup to disallow anything that is potentially so harmful?

If this is something to watch out for, does anyone know of any tutorials anywhere that include a conclusive list of expressions that should be filtered out?

Thanks in advance.
Richard