Learn what to do if the WordPress function is_user_logged_in is not working. Our WordPress Support team is here to help you with your questions and concerns.

WordPress is_user_logged_in not working | Resolved

If you have been having trouble with the is_user_logged_in() function in WordPress, our experts have your back.

Here are a few troubleshooting tips to keep this error at bay:

1. First, we have to verify the function is available. This involves checking that the is_user_logged_in() function is available where we are using it.
2. Next, we have to make sure that we are using the function correctly. According to our experts, the is_user_logged_in() function is often used without any parameters.

   For instance:

   <?php if (is_user_logged_in()) { // User is logged in } else { // User is not logged in } ?>
3. Then, we have to check if the code is executed after WordPress has been started. In case we run the code too early, some functions like is_user_logged_in() will not work.

   For example, we have to check if the code is placed in the WordPress loop or an action hook.

   <?php // Example: Correct placement within the loop if (have_posts()) : while (have_posts()) : the_post(); if (is_user_logged_in()) { // User is logged in } else { // User is not logged in } endwhile; endif; ?>
4. Now, try deactivating the theme and plugins one by one to check if the issue still pops up. This makes it easier to identify if the theme or a plugin is causing a problem with the is_user_logged_in() function.
5. Furthermore, clear all caching mechanisms.
6. Then, enable WordPress debugging. Then, we can look at the error messages for more information about the problem. We can do this by adding this code to our wp-config.php file:

   define('WP_DEBUG', true);
7. Additionally, we should check the PHP error logs for more information about the error.
8. In case our site is using a custom session management system it may affect the is_user_logged_in() function. So, we have to verify the server’s session configuration is correct.
9. Finally, check the WordPress installation is complete and that no core files are missing or corrupted.

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Conclusion

Today, our Support Engineers demonstrated what to do if the WordPress function is_user_logged_in is not working.