Why is my PHP session_destroy() Failing?

Troubleshooting PHP session_destroy() Failure

The inability to destroy PHP session variables using session_destroy() can be perplexing. Understanding the potential issues can help resolve the problem.

Reason for session_destroy() Malfunction

session_destroy() relies on the session being initialized before it can be destroyed. If the session is not initialized, the function will fail to execute successfully.

Example Usage

Consider the following code:

if (isset($_SESSION['LAST_ACTIVITY']) && (time() - $_SESSION['LAST_ACTIVITY'] > 1800)) {
    session_destroy();
    session_unset();
}

In this example, session_destroy() will fail if the session was not initialized before reaching this code.

Solution: Initialize Session Before Destroying

To remedy the issue, ensure that you have initialized the session using session_start() before calling session_destroy().

session_start();
session_destroy();

By including session_start() at the beginning of the script, you ensure that the session is active and can be destroyed properly.

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