Output Google Adwords tracking code when a booking request is made.

adwords-tracking-for-rtb.php

<?php
/**
 * Plugin Name: Google Adwords Tracking for Restaurant Reservations
 * Plugin URI: http://themeofthecrop.com
 * Description: Insert a Google Adwords Campaign conversion tracking snippet when a new booking request has been made.
 * Version: 0.0.1
 * Author: Theme of the Crop
 * Author URI: http://themeofthecrop.com
 * License:     GNU General Public License v2.0 or later
 * License URI: http://www.gnu.org/licenses/gpl-2.0.html
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU
 * General Public License as published by the Free Software Foundation; either version 2 of the License,
 * or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
 * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * You should have received a copy of the GNU General Public License along with this program; if not, write
 * to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */
if ( ! defined( 'ABSPATH' ) )
	exit;


/**
 * Check the status of a booking request after it's been added to the database
 */
add_action( 'rtb_insert_booking', 'gatrtb_check_booking_request' );
if ( !function_exists( 'gatrtb_check_booking_request' ) ) {
function gatrtb_check_booking_request( $booking ) {

	if ( $booking->request_inserted === true ) {
		add_action( 'wp_footer', 'gatrtb_add_adwords_conversion_code' );
	}

}
} // endif;

/**
 * Output the conversion tracking code in the footer
 */
if ( !function_exists( 'gatrtb_add_adwords_conversion_code' ) ) {
function gatrtb_add_adwords_conversion_code( $booking ) {
	?>

	<!-- Add your tracking snippet here -->

	<?php
}
} // endif;