PHP logout system not working. (session_destroy on MAMP) - php

Question

I recently transferred my website from XAMPP to MAMP. The problem is that my logout system is no longer working. The logout widget:
Log Out
My logout page itself:
<?php
session_start()
session_destroy()
header('Location:login.php');
?>
The weird thing is that when I change something to logout.php, such as making it a simple echo statement:
<?php
echo 'test';
//session_start()
//session_destroy()
//header('Location:login.php');
?>
I still do not see 'test' in my browser; I just stay at index.php even though I have commented out the header in the page. I am 100% the link path is fine.
Wether or not I alter the logout.php file or not, I can see that the server has NOT deleted the session file in tmp/php. This is weird because I have allowed in MAC OS X everyone acces to read and write to this tmp/php folder.
OS: MAC OS X
SERVER: Apache within MAMP
PHP:5.4.4
BROWSERS: Problem occurs in both Google Chrome & Safari
(This is my maiden voyage with posting a question on stackoverflow, if you tips to improve my questioning, please let me know)

Answer 1

Try using this instead:
<?
session_start();
$_SESSION = array();
header("Location: index.php");
?>
I just clear $_SESSION, and it always works for me

Answer 2

If calling logout.php when it containts the code below does not print test then there is something else wrong and it has nothing to do with the sessions.
<?php
echo 'test';
//session_start()
//session_destroy()
//header('Location:login.php');
?>
You mention that it still shows the index.php, which makes me thing you have a rewrite rule in your .htaccess file which redirects the call from logout.php to the index. Check your htaccess file for any rules.
You can find information about htaccess on MAMP here

Answer 3

These are the essential parts of a logout, assuming that your scripts are using PHP sessions. Note that your logout script causes a parse error because it is missing semicolons at the end of statements. Maybe just a typo.
<?php // RAY_EE_logout.php
session_start();
// CLEAR THE INFORMATION FROM THE $_SESSION ARRAY
$_SESSION = array();
// IF THE SESSION IS KEPT IN COOKIE, FORCE SESSION COOKIE TO EXPIRE
if (isset($_COOKIE[session_name()]))
{
$cookie_expires = time() - date('Z') - 3600;
setcookie(session_name(), '', $cookie_expires, '/');
}
// TELL PHP TO ELIMINATE THE SESSION
session_destroy();
// REDIRECT TO THE HOME PAGE
header("Location: /");
exit;
HTH, ~Ray

Answer 4

Try using output buffer.
<?php
ob_start();
session_start();
session_destroy();
header('Location:login.php');
?>

Answer 5

In my case it had to do with the php code block not being defined correctly. I had <? ?> instead of <?php ?>
Hope this helps someone.

Answer 6

#tom.e.degroot: Last time I checked, "it didnt work" was not an error message. You'll need to describe the symptoms a little more. Please follow the guidance here: http://SSCCE.org and give us something we can install and test on our own servers. Thanks, ~Ray