Common WordPress Issues and How to Fix Them

Solutions and strategies for common WordPress problems

WordPress is a popular website building platform for many developers, but it is not perfect. This article will provide solutions to some common problems.

Key points:

• White screen error: Disable the plug-in or switch to the default theme. If the admin panel is not accessible, add "_old" to the plugin and theme filename suffix via FTP to disable it.
• Password reset failed: Download the functions.php file of the active topic through FTP, add the code wp_set_password( 'password', 1 ); to reset the password (remember to delete the code later). Or use phpMyAdmin to edit the database and reset the password.
• Insufficient memory: Add define( 'WP_MEMORY_LIMIT', '64M' ); to the WordPress configuration file wp-config.php (adjust the value as needed).

White screen error (white screen of death)

The white screen error shows that the website cannot load and a blank page is displayed. The main reason is compatibility issues with plugins or themes.

Step 1: If you can access the admin panel, disable the plug-in one by one. If the problem remains the same, switch to the default WordPress theme.

Advanced troubleshooting: If the admin panel is not accessible, you need to manually disable the plug-in and theme through FTP. After logging in to the server, go to the plug-in directory (usually wp-content/plugins) or the theme directory (wp-content/themes), and add "_old" to the file name suffix. Then try accessing the admin panel. If successful, enable the plugin or theme one by one to find the source of the problem.

More advanced troubleshooting methods: Set WP_DEBUG to true: define( 'WP_DEBUG', true ); in the wp-config.php file, and then visit the error page to view the error details. After completion, set WP_DEBUG back to false: define( 'WP_DEBUG', false );

Advanced maintenance mode

After the website is upgraded, the system sometimes fails to clean up all files, resulting in a maintenance mode prompt of "Temporarily unavailable, please try again later".

Solution: Log in to the website through FTP and delete the .maintenance file in the root directory.

Password reset system failure

Easy method: If you use the default administrator username (admin), you can reset your password through FTP:

1. Access the website via FTP and download the functions.php file for the active topic.
2. Add wp_set_password( 'your_new_password', 1 ); at the beginning of the file (replace your_new_password with your new password).
3. Upload files to the server.
4. After logging in, delete the added code.

Complex method: If you forget your administrator password and the password reset email is invalid, you need to reset your password manually. It is recommended to use phpMyAdmin to edit WordPress database.

1. Enter the WordPress database.
2. Access the wp_users table.
3. Find the line corresponding to your username.
4. Use the MD5 hash generator to generate the hash value of the new password and use it to update the user_pass field.
5. Save changes.

Insufficient memory

The default memory allocated to WordPress by many servers is not enough to handle complex customizations. You can increase the memory limit by modifying the WordPress configuration file wp-config.php:

define( 'WP_MEMORY_LIMIT', '64M' ); (Adjust the value as needed)

Active protection measures

The best way to deal with serious errors is to roll back to the previous backup. It is recommended to use a managed WordPress service or to make regular daily, weekly and monthly backups.

FAQ

The following are brief answers to some common questions:

• The website is not updated in time: Clear the browser cache or use another browser. Check cache plugin settings.
• 404 Error: Check if the link is damaged or the page has been deleted. Reset the permalink (Settings >permalinks >save changes).
• Slow website loads: Optimize images, disable unnecessary plugins, choose more reliable hosting services, and use cache plugins.
• Cannot upload pictures: Check file permissions, storage space, picture files.
• White screen: Increase PHP memory limit, disable plug-ins, and switch to the default theme.
• Memory exhaustion: Increase PHP memory limit (for example: define('WP_MEMORY_LIMIT', '256M');).
• Unable to log in: Clear cookies, disable plug-ins, and switch to the default theme.
• Syntax error: Disable the plug-in, switch to the default theme, and delete the custom code snippet.
• Database connection error: Check database credentials, contact the hosting service provider, and repair the database.
• Cannot write files: Check file permissions, storage space, and contact the hosting service provider.

(The picture remains in its original format and position)

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