<?php // die when the file is called directly if (!defined('WP_UNINSTALL_PLUGIN')) { die; } //define a vairbale and store an option name as the value. $option_name = 'plugininze_example_option'; //call delete option and use the vairable inside the quotations delete_option($option_name); // for site options in Multisite delete_site_option($option_name); ?>