Fatal error: Call to undefined method CI_Session::sess_destroy() 1.7.2 – Complete Solution Guide

Error Overview

The error message “Fatal error: Call to undefined method CI_Session::sess_destroy() 1.7.2” indicates that the CodeIgniter (CI) framework is attempting to call a method sess_destroy() on the CI_Session class, which does not exist in the specified version (1.7.2). This issue typically arises due to version compatibility problems, incorrect method usage, or misconfiguration in the session handling.

Common Causes

1. Version Mismatch: The method sess_destroy() may not be available in the version of CodeIgniter you are using. Make sure to check the documentation for the specific version to confirm the available methods.
2. Incorrect Code Implementation: The method may be called incorrectly in your code, leading to this fatal error.
3. Missing or Incorrect Configuration: The session settings in the CodeIgniter configuration files may not be properly set up, causing the framework to fail when trying to destroy a session.
4. Compatibility Issues with PHP: Certain methods or features may have changed in different PHP versions, impacting how CodeIgniter functions.
5. CodeIgniter Core File Corruption: There may be issues with the core files, possibly due to incomplete updates or file corruption.

Solution Methods

To resolve the “Fatal error: Call to undefined method CI_Session::sess_destroy() 1.7.2”, follow the methods outlined below.

Method 1: Check CodeIgniter Version

1. Verify the version of CodeIgniter you are using:
   php
echo CI_VERSION;
2. Consult the CodeIgniter documentation for your specific version to ensure sess_destroy() is a valid method.
3. If your version does not support it, consider upgrading to a newer version of CodeIgniter that includes this method.

Method 2: Implement a Custom Session Handler

1. If you want to keep using your current version, you might have to create a custom session handler that includes a method to destroy sessions:
   “`php
   class MY_Session extends CI_Session