Why Is My session_destroy() Not Working in PHP?

Troubleshooting Non-functioning session_destroy() Method in PHP

If you've encountered issues where session_destroy() fails to remove session variables, it's essential to investigate the underlying cause. Here's an explanation of the reasons and alternative solutions:

Initialization Requirement:

The session variable must be initialized before attempting destruction. The session_start() function initiates the session, and omitting this step can result in failed session destruction.

To fix this, ensure you have added session_start() before using session_destroy():

session_start();
session_destroy();

Execution Scope:

Session initialization and destruction must occur within the same script's execution scope. If your session is initialized in one script (e.g., index.php) but destroyed in a different script (e.g., logout.php), it won't work. In such cases, the session must be initiated in the script where it is destroyed.

Alternative Session Destruction Methods:

Besides session_destroy(), there are alternative ways to destroy a session in PHP:

• session_unset(): Removes all session variables.
• session_regenerate_id(): Generates a new session ID, effectively abandoning the old session and its variables.

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