wordpress-plugin-boilerplate/uninstall.php

<?php

/**
 *  Fired when the plugin is uninstalled.
 *
 *  When populating this file, consider the following flow
 *  of control:
 *
 *  - This method should be static
 *  - Check if the $_REQUEST content actually is the plugin name
 *  - Run an admin referrer check to make sure it goes through authentication
 *  - Verify the output of $_GET makes sense
 *  - Repeat with other user roles. Best directly by using the links/query string parameters.
 *  - Repeat things for multisite. Once for a single site in the network, once sitewide.
 *
 *  This file may be updated more in future version of the Boilerplate; however, this is the
 *  general skeleton and outline for how the file should work.
 *
 *  For more information, see the following discussion:
 *  https://github.com/tommcfarlin/WordPress-Plugin-Boilerplate/pull/123#issuecomment-28541913
 *
 *  @link       Test
 *  @since      1.0.0
 *
 *  @package    Test
 */

if (!defined('ABSPATH')) {
    exit; // Exit if accessed directly
}

// If uninstall not called from WordPress, then exit.
if (!defined('WP_UNINSTALL_PLUGIN')) {
	exit;
}