profile address url validation

[jrahma]

Hi,

I have an input text control in my php page to allow user to enter thei profile address url which will be like this:

wwww.mydomain.com/PROFILE.ADDRESS

I want to know how can I let php validate it for me so only valid characters will be allowed such as alphabits, numbers, . (dot) and _ (underscore)?

Thanks,
Jassim

[Weedpacket]

[man]preg_match[/man] is a common way to do this.