EnglishThe error message "PHP Warning: Module 'mysqli' is already loaded in Unknown on line 0" indicates that the mysqli extension is being loaded multiple times in your PHP configuration. This can happen if the extension is being declared in multiple places in your PHP configuration files.
Here are the steps you can take to resolve this issue:
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Check PHP Configuration Files: Start by checking your PHP configuration files. Look for duplicate entries of the
mysqliextension. These files can be located in various directories depending on your server setup. Common locations include/etc/php.ini,/etc/php.d/, or/etc/php/7.x/mods-available/. -
Look for Duplicate Extension Entries: Open the PHP configuration files in a text editor and search for lines that include
extension=mysqli.soorextension=mysqli.dlldepending on your operating system. If you find multiple occurrences, remove the duplicates. -
Restart PHP: After making changes to the PHP configuration, you'll need to restart the PHP service for the changes to take effect. You can do this by running the appropriate command for your server setup. For example:
bash
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sudo service php-fpm restart # For PHP-FPM sudo service apache2 restart # For Apache with mod_phpIf you're using a different web server or PHP handler, adjust the command accordingly.
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Check Loaded Extensions: You can also use the
php -mcommand to list all the currently loaded PHP extensions. Make sure thatmysqliis only listed once. -
Verify PHP Configuration: Confirm that your PHP configuration is set up correctly, and that there are no syntax errors or misconfigurations that might be causing this issue.
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Check for Third-Party Scripts or Plugins: If you're using a CMS or other software, it's possible that a third-party script or plugin is attempting to load the
mysqliextension redundantly. Check the settings or configurations of any third-party software you're using. -
Review Server Logs: Check your server's error logs for any additional information about the issue. This might provide more context on where the duplicate extension loading is originating.
If you've tried these steps and are still encountering the issue, it's possible that there's a more complex configuration or a specific setup causing the problem. In such cases, consider seeking further assistance from a developer or system administrator with experience in PHP configuration.
