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session question [message #177665] Thu, 12 April 2012 16:43 Go to previous message
William Gill is currently offline  William Gill
Messages: 31
Registered: March 2011
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I have a site with an input form that recursively calls itself via
action="<?php echo $_SERVER['PHP_SELF']; ?>", and a couple links with
url encoded data that indicate simple selections w/o using a form. It
uses different include('file'); statements based on the progress and/or
choices previously made, and it works fine, but is a little complicated
to track "state" when troubleshooting, updating, or changing.

I am thinking of using a session approach which would be simpler to
follow, but have never used sessions on a page that is recursively called.

First since session_start() would be called every iteration, that will
cause an error unless I encapsulate it in an if loop to see if the
session already exists. Is this the preferred method?

Second, when the user is finished and receives an acknowledgement I plan
to call a session_unset() to clear things up so that if they want to do
it again, they are beginning with a clean slate. Again, is this the
preferred method?
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