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Title : Problem passing session variables
Categories : Sessions, PHP Update Picture
Randy Phillips
Date : Mar 21st 2002
Grade : 3 of 5 (graded 8 times)
Viewed : 7972
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I tried every example of creating a session variable I could find and got the same
results with all of them. The session variables got set on the initial page but
that's the only place I could access them.

I'm certain others new to php have come across this and felt equally foolish after
discovering the solution.

This is a sample login page that starts a session when a user successfully logs in:

<?
$connect...

$sql ...

list($id,$first_name) = mysql_fetch_row($sql);
session_start();
if (!session_is_registered('user_id')) {
session_register('user_id');
$user_id = $id;
session_register('user_name');
$user_name = $first_name;
} else {
echo "<p>Session is set and should now be availalbe on all pages via
a cookie. At least that what I expected.";
}


//Sadly, these vars were only available on this page.

echo "<p>ID: $user_id";

echo "<p>Name: $user_name";
?>
Solution: What I did NOT do, and what is not made very clear in any literature I
came across, is that you need to set the session_start() function at the top of
EVERY page that will be in the session.

Hope this helps.



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