What steps can be taken to activate the MySQL extension in PHP?

To activate the MySQL extension in PHP, you need to enable the extension in the php.ini file. You can do this by uncommenting or adding the following line in the php.ini file: ``` extension=mysqli ``` After making this change, you will need to restart your web server for the changes to take effect.

// Enable MySQL extension in php.ini file
// Uncomment or add the following line in php.ini
// extension=mysqli

// Restart your web server after making the change