MySQLi Extension Missing: How Do I Fix the \'mysqli extension is missing\' Error in PHP?

Missing MySQLi Extension: Troubleshooting and Solution

If you encounter the error message "The mysqli extension is missing. Please check your PHP configuration," don't panic. Follow these steps to resolve the issue and get your script up and running.

Checking Your PHP Configuration

1. Determine your active php.ini file: Apache uses a primary php.ini file located in the PHP installation directory, but it may also use additional configuration files from other locations. To find the active php.ini, use the following terminal command:

php -i | grep php.ini

2. Check for the extension line: Open the active php.ini file and search for the line starting with "extension=mysqli". If you find this line, proceed to step 3.
3. Uncomment the extension line: If the extension line is commented out using a semicolon (;), remove the semicolon to enable the extension.
4. Restart Apache: Once you've made the necessary changes, restart Apache to apply them:

• Ubuntu/Debian: sudo service apache2 restart
• CentOS/Red Hat: sudo systemctl restart httpd

Alternative Solution

If the above steps don't resolve the issue, try the following alternative solution:

1. Locate php_mysqli.dll: This file is typically located in the PHP extension directory (e.g., C:phpext).
2. Edit php.ini: Add the following line to your php.ini file, replacing "C:phpextphp_mysqli.dll" with the actual path to the file you found:

extension="C:\php\ext\php_mysqli.dll"

3. Restart Apache: Restart Apache as described above.

This should load the mysqli extension and enable you to use the MySQLi API in your PHP scripts. If you still have problems, consult your system logs or seek additional troubleshooting assistance.

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