Uninstalling a Plugin

Uninstalling a Plugin — a practical guide to WordPress plugin uninstall.php with clear examples you can reuse in real projects.

WordPress Plugin Development Series (9/95). Prefer one article? Read the complete WordPress plugin development tutorial.

Short description

Only delete data on uninstall if that is expected. Check the uninstall constant and user capability.

uninstall.php

<?php
if (! defined('WP_UNINSTALL_PLUGIN')) {
    exit;
}

delete_option('acme_settings');
global $wpdb;
$wpdb->query("DROP TABLE IF EXISTS {$wpdb->prefix}acme_items");