Summary of tips for solving WordPress errors and miscellaneous problems

As a widely used content management system, WordPress will inevitably encounter various difficulties and complications in the process of building and maintaining websites. This article will focus on common WordPress error problems, combined with specific code examples, to provide you with a summary of solutions. I hope it will be helpful to you.

1. White screen problem

Problem description: When visiting the WordPress website, the page displays blank without any content.

Possible causes and solutions:

1. Check whether the theme or plug-in is compatible with the WordPress version. If it is not compatible, try disabling or updating the relevant plug-in.

2. Check the memory limit of WordPress. You can increase the memory by adding the following code in wp-config.php:

   define('WP_MEMORY_LIMIT', '256M');

3. Check the error log and locate For specific error information, you can turn on WP_DEBUG mode in wp-config.php:

   define('WP_DEBUG', true);
   define('WP_DEBUG_LOG', true);

4. If you cannot solve it by yourself, you can try to contact the hosting service provider or the WordPress community for support.

2. Plug-in conflict

Problem description: After installing or updating the plug-in, the website appears abnormal and the page cannot be displayed normally.

Possible causes and solutions:

1. Disable the recently installed plug-ins, check whether they are back to normal, and check for plug-ins that may cause conflicts one by one.

2. Use the built-in "Safe mode" function of WordPress and turn it on by adding the following code to wp-config.php:

   define('WP_DISABLE_PLUGINS', true);

3. Update WordPress to Latest version and plug-in updates to resolve known compatibility issues.

3. Database connection problem

Problem description: The website displays the error message "Error establishing a database connection".

Possible causes and solutions:

1. Check whether the database-related configuration information in the wp-config.php file is correct.
2. Ensure that the database service is running normally and that the username and password match.
3. Use database management tools such as phpMyAdmin to check whether there are problems with the database and repair the data table.
4. You can try to rebuild the wp-config.php file to ensure that the database information is correct.

4. 404 page error

Problem description: When accessing the website, a 404 page appears, indicating that the page does not exist.

Possible causes and solutions:

1. Confirm whether the Permalink settings are correct. You can refresh the Permalink settings by re-saving them in Background Settings-General.
2. Check if the theme or plugin is affecting WordPress’ routing rules, try disabling the parts that may be causing the problem.

3. Use the .htaccess file to configure rewrite rules to ensure that the website link structure is correct.

   # BEGIN WordPress
   <IfModule mod_rewrite.c>
   RewriteEngine On
   RewriteBase /
   RewriteRule ^index.php$ - [L]
   RewriteCond %{REQUEST_FILENAME} !-f
   RewriteCond %{REQUEST_FILENAME} !-d
   RewriteRule . /index.php [L]
   </IfModule>
   # END WordPress

Through the above solutions, we can effectively deal with common WordPress error problems and ensure the normal operation of the website. Of course, for more complex problems, we can also get more help by consulting official documents, search engines or help forums. I hope that the solutions provided in this article can help WordPress users solve difficult problems and successfully build and manage their own websites.

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