Have I set the isset wrong

[seanlyons]

I have a page that loads some form data as a session variable, the first time it loads, but the page will be reloaded several times without being supplied by the form. This leads to an undefined variable error.

I am pretty sure what I want to do is use isset() with my $_POST variable, and an if statement along the lines of,

if there is some form data there, then define a new session variable, else, ignore the definition statement, and continue to use the existing session variable data.

All of my attempts to date have failed.

Any pointers?

[tullmejs]

I am not at all sure; though I recently had problems with isset() myself. I solved them (dirty) by

if (isset($var) && ($var<>"")) dosomething;

Might work.

[LarsLai]

hi!
to do it less dirty use

if (!empty($var))

[tullmejs]

Ahh, good one :-) though 0 and "0" would be considered empty...

However, the dirty thing about it was that I never investigated what the actual problem was ;-p