|  | Posted by dimo414 on 04/02/07 15:22 
First off, like JO said, you're thinking in terms of JavaScript, whileworking in PHP.  $_SESSION is only used for session data, like a user
 id - information you set about a visitor that will cary over between
 pageviews.  $_GET and $_POST are for form data (or in the case of
 $_GET, url variables as well).  You determine which to use in the
 <form> tag of your html.  Although $_REQUEST will accomodate both, I
 would suggest always using the specific array depending on how you're /
 supposed/ to be receiving the data.  If you use $_REQUEST, and you're
 trying to get POST data, a malicious user could put the same name into
 a GET variable and overwrite that index of $_REQUEST.
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