The plugin is implemented as a PHP extension. See the installation instructions to install the » PECL/mysqlnd_uh extension. Then, load the extension into PHP and activate the plugin in the PHP configuration file using the PHP configuration directive named mysqlnd_uh.enable. The below example shows the default settings of the extension.
Example #1 Enabling the plugin (php.ini)
mysqlnd_uh.enable=1 mysqlnd_uh.report_wrong_types=1