Why is My PHP Code Throwing a 'Fatal error: Class 'MySQLi' not found' Error?

MySQLi Not Found During Installation

While following a tutorial, you may encounter the error "Fatal error: Class 'MySQLi' not found" on line 8. This error indicates that the MySQLi extension is not enabled for your PHP installation.

The code on line 8 attempts to create a new MySQLi object using the $mysqli = new MySQLi($db_server, $db_user, $db_pass, $db_name); statement. However, if the MySQLi extension is not installed or enabled, this code will fail.

Solution

To resolve this issue, you need to install the MySQLi extension. You can do this by following these steps:

1. Check if the PHP intallation is enabled. You can do this by checking the php.ini file, and searching for the line extension=mysqli. If the line is commented, remove the comment (;) from the line.
2. If the extension is not enabled, you need to install the MySQLi extension. This can be done by downloading the MySQLi extension from PECL (https://pecl.php.net/package/mysqli), and then installing it using the phpize and make commands.
3. After installing the extension, make sure to restart the web server to apply the changes.

Once you have installed the MySQLi extension, you should be able to use the MySQLi class without any errors.

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