php limiting form options

[ichversuchte]

I am trying to write a some code to set a restriction on a text box on a form. I want to restrict all users to use this that doesn't have a @iup.edu at the end of there email address. Is there anyway to do this with php? If so how?

[.josh]

is the user already logged in? if so, then just grab the user's email address wherever var you have it in (i'm using $useremailaddress as generic var), get the last 8 chars of it and put that into a var ($checkaddress) and if $checkaddress does not = @ipu.edu then display the text box or do whatever you wanna do.


$checkaddress = substr($useremailaddress,-8);
if ($checkaddress != '@iup.edu') {
/* insert text box here

[ichversuchte]

thank you ....it worked and was a big help ...