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Posted value to set session variable in Php

Posted on 2010-11-28
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Last Modified: 2012-05-10
I'm working on a Windows server with IIS webserver that supports ASP and PHP. I simply want to set a session variable according to the value in a posted field. If I have a form in a php file as in the code below where it posts to itself and tries to set the session variable, when it redirects to file test2.php the session variable is not set.

If instead I put the checking of the posted value and the setting of the session variable in file test2.php then the session value does persist, eg if there's a link to test3.php then the session value is still set in test3.php.

Is this normal that the session does not survive a redirect using: header('Location:test2.php');

<?Php
session_start();
if (isset($_POST['field1']) && $_POST['field1'] != '') {
	// some other code here checks the database
        $_SESSION['user'] = 'logged-in';
	header('Location:test2.php');
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
 <title>TEST</title>
</head>
<body style="background-color: #ffffff">

<form name="login" action="test.php" method="post">
  Enter any text to test session handling&nbsp;<input type="text" name="field1" id="field1" />&nbsp;<input type="submit" name="submit" id="submit" value="Sign In" />
</form>

</body>
</html>

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Question by:ncw
2 Comments
 
LVL 34

Accepted Solution

by:
Beverley Portlock earned 500 total points
ID: 34225070
Are you using session_start() in test2.php?

Also, after the header statement, place an exit to force the redirection to occur without any further processing. Executing header("Location......"); does NOT make the redirection occur - the script keeps executing until it halts.

if (isset($_POST['field1']) && $_POST['field1'] != '') {
      // some other code here checks the database
        $_SESSION['user'] = 'logged-in';
      header('Location:test2.php');

        exit;   // <---- add this
}
0
 
LVL 1

Author Closing Comment

by:ncw
ID: 34225262
Spot on! It was the exit(); that was missing and has now fixed the issue. Thanks very much!
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