Validating Forms with PHP

[thrawn]

Hello

I am new into PHP and i was wondering if there is a way to do validation using PHP without sending the data back to the server. I mean like how java script does it. It checks the data before it goes to the server. I wanna reduce server traffic.

So can anyone tell if that is possible?

Thanks

[Anon]

php is 100% server-side.
Use javascript to validate
the form. then do the same
validation in php
(if someone
has js turned off to kill
all lame popup-windows)