fix for firstdata e4

firstdata_e4.php

<?php
// This is the full contents of the updated init.php file for firstdata_e4 for the fix added to 3.1.34-BETA

// This is for the gateway display
add_action('action_hook_espresso_display_offsite_payment_header', 'espresso_display_offsite_payment_header');
add_action('action_hook_espresso_display_offsite_payment_footer', 'espresso_display_offsite_payment_footer');
event_espresso_require_gateway("firstdata_e4/e4_vars.php");

if (!empty($_REQUEST['type']) && $_REQUEST['type'] == 'firstdata_e4') {
	event_espresso_require_gateway("firstdata_e4/e4_ipn.php");
	add_filter('filter_hook_espresso_transactions_get_attendee_id', 'espresso_transactions_firstdata_e4_get_attendee_id');
	add_filter('filter_hook_espresso_thank_you_get_payment_data', 'espresso_process_firstdata_e4');
}

// end the init.php file.

// start of the updated function in e4_ipn.php

function espresso_transactions_firstdata_e4_get_attendee_id($attendee_id) {
	if (!empty($_REQUEST['x_cust_id'])) {
		$attendee_id = $_REQUEST['x_cust_id'];
	}
	if (!empty($_REQUEST['x_reference_3'])) {
		$temp_array = explode(' ', $_REQUEST['x_reference_3']);
		$_REQUEST['registration_id'] = $temp_array[0];
		$_REQUEST['type'] = $temp_array[1];
	}
	return $attendee_id;
}