$create = $wpdb->insert('wp_ito_plan', array('name' => $_POST['name'], 'tickets' => $_POST['tickets'], 'price' => $_POST['price'], 'visits' => $_POST['visits']));

WordPress database error: [Duplicate entry '0' for key 'PRIMARY']
INSERT INTO `wp_ito_plan` (`name`,`tickets`,`price`,`visits`) VALUES ('asd','123','123','123')