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       https://makris.io
 * @since      1.0.0
 *
 * @package    Locations_Maps
 */

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

global $wpdb;
$plugin_options = $wpdb->get_results( "SELECT option_name FROM $wpdb->options WHERE option_name LIKE 'lm_options'" );
$plugin_posts   = $wpdb->get_results( "SELECT option_name FROM $wpdb->posts WHERE post_type LIKE 'locations%'" );

foreach ( $plugin_options as $option_field ) {
	delete_option($option_field->option_name);
}

foreach ( $plugin_posts as $post ) {
	wp_delete_post( $plugin_posts->ID, true );
}

$meta_fields = [
	'_map_address',
	'_map_city',
	'_map_state',
	'_map_zip',
	'_map_country',
	'_map_lat',
	'_map_lng',
	'_map_placeID',
	'_center_location',
];

$args = [
	'post_type' =>  'locations',
	'per_page'  =>  -1,
];

flush_rewrite_rules();