generates urls to voyages-sncf.com to book trains with prefilled form items

voyages-sncf-resa-href.php

<?php

/*
 * voyages-sncf.php - generates urls to voyages-sncf.com with prefilled form items.
 *
 * Copyright 2011, Francois Revol, revol@free.fr.
 * Distributed under the terms of the MIT License.
 */

/*
 * currently those urls look like:
http://www.voyages-sncf.com/billet-train?_LANG=FR&_AGENCY=VSC&COMFORT_SMOKING=N&DISTRIBUTED_COUNTRY=FR&SOURCE=EXPR_BOOK_HP&ORIGIN_CITY=&DESTINATION_CITY=TAIN%20GARE%20SNCF%20%2826%29&OUTWARD_DATE=11/11/2011&OUTWARD_TIME=07&INWARD_DATE=13/11/2011&INWARD_TIME=7&COMFORT_CLASS=2&NB_TYPO_ADULT=1&DIRECT_TRAVEL_CHECK=off&FLEXIBLE=off&PASSENGER_1=ADULT&PASSENGER_1_CARD=default&PASSENGER_1_FID_PROG=default&PASSENGER_1FID_NUM=&PASSENGER_1_FAM_PERCENTAGE=30&PASSENGER_2=ADULT&PASSENGER_2_CARD=default&PASSENGER_2_FID_PROG=default&PASSENGER_2FID_NUM=&PASSENGER_2_FAM_PERCENTAGE=30&PASSENGER_3=ADULT&PASSENGER_3_CARD=default&PASSENGER_3_FID_PROG=default&PASSENGER_3FID_NUM=&PASSENGER_3_FAM_PERCENTAGE=30&PASSENGER_4=ADULT&PASSENGER_4_CARD=default&PASSENGER_4_FID_PROG=default&PASSENGER_4FID_NUM=&PASSENGER_4_FAM_PERCENTAGE=30&PASSENGER_5=ADULT&PASSENGER_5_CARD=default&PASSENGER_5_FID_PROG=default&PASSENGER_5FID_NUM=&PASSENGER_5_FAM_PERCENTAGE=30&PASSENGER_6=ADULT&PASSENGER_6_CARD=default&PASSENGER_6_FID_PROG=default&PASSENGER_6FID_NUM=&PASSENGER_6_FAM_PERCENTAGE=30

 * arguments look like:
_LANG=FR
_AGENCY=VSC
COMFORT_SMOKING=N
DISTRIBUTED_COUNTRY=FR
SOURCE=EXPR_BOOK_HP
ORIGIN_CITY=
DESTINATION_CITY=TAIN%20GARE%20SNCF%20%2826%29
OUTWARD_DATE=13/02/2011
OUTWARD_TIME=20
INWARD_DATE=
INWARD_TIME=7
COMFORT_CLASS=2
NB_TYPO_ADULT=1
DIRECT_TRAVEL_CHECK=off
FLEXIBLE=off
PASSENGER_1=ADULT
PASSENGER_1_CARD=default
PASSENGER_1_FID_PROG=default
PASSENGER_1FID_NUM=
PASSENGER_1_FAM_PERCENTAGE=30
...
PASSENGER_6=ADULT
PASSENGER_6_CARD=default
PASSENGER_6_FID_PROG=default
PASSENGER_6FID_NUM=
PASSENGER_6_FAM_PERCENTAGE=30
 */

/**
 * This function generates an url to the voyages-sncf.com website to prefill the train reservation form.
 * Cette fonction génère une url vers le site web voyages-sncf.com pour pré-remplir le formulaire de réservation de train.
 * @author François Revol
 * @param from Nom de la gare de départ
 * @param outward Date de départ (NULL ou une chaîne au format DATE_ATOM (exemple : 2005-08-15T15:52:01+00:00) ou un objet DateTime
 * @param inward Date de retour (NULL ou une chaîne au format DATE_ATOM (exemple : 2005-08-15T15:52:01+00:00) ou un objet DateTime
 * @param passengers Nombre de passagers (1 par défaut)
 * @param comfort Classe de confort (1 ou 2, 2 par défaut)
 * @param lang Code ISO de la langue à utiliser pour le formulaire (doit rester être 'FR' !)
 * @return l'url pré-encodée vers le formulaire pré-rempli
 */
function linkto_voyages_sncf_com($from, $to, $outward=NULL, $inward=NULL, $passengers = 1, $comfort = 2, $lang='FR')
{
	$baseurl='http://www.voyages-sncf.com/billet-train?';

	// default departure hours
	$outward_h = "7";
	$inward_h = "7";
	
	// AS = 1 way, AR = round-trip
	$travel_type = "AS";

	if (!isset($outward)) {
		$date = time();
	} else if (is_string($outward)) {
		$date = @strtotime($outward);
	} else if (is_numeric($outward)) {
		$date = $outward;
	} else
		$date = time();

	$outward = @date("d/m/Y", $date);
	$outward_h = @date("G", $date);

	if (!isset($inward) || empty($inward)) {
		$date = NULL;
	} else if (is_string($inward)) {
		$date = @strtotime($inward);
	} else if (is_numeric($inward)) {
		$date = $inward;
	} else
		$date = NULL;

	if (isset($date)) {
		$travel_type = "AR";
		$inward = @date("d/m/Y", $date);
		$inward_h = @date("G", $date);
	} else
		$inward = "";


/* Only works with PHP > 5.2.0

	if (!isset($outward)) {
		$date = new DateTime("now", new DateTimeZone("Europe/Paris"));
		$outward = $date->format("d/m/Y");
	} else if (is_object($outward)) {
		$outward_h = $outward->format("G");
		$outward = $outward->format("d/m/Y");
	} else if (is_string($outward)) {
		$date = new DateTime($outward, new DateTimeZone("Europe/Paris"));
		$outward_h = $date->format("G");
		$outward = $date->format("d/m/Y");
	}

	if (!isset($inward)) {
		$inward = "";
	} else if (is_object($inward)) {
		$travel_type = "AR";
		$inward_h = $inward->format("G");
		$inward = $inward->format("d/m/Y");
	} else if (is_string($inward)) {
		$date = new DateTime($inward, new DateTimeZone("Europe/Paris"));
		$travel_type = "AR";
		$inward_h = $date->format("G");
		$inward = $date->format("d/m/Y");
	}
*/
	
	$arguments = array(
		"_LANG" => strtoupper($lang),
		"_AGENCY" => "VSC",
		"TRAVEL_TYPE" => $travel_type,
		"COMFORT_SMOKING" => "N",
		"DISTRIBUTED_COUNTRY" => "FR",
		"SOURCE" => "EXPR_BOOK_HP",
		"ORIGIN_CITY" => $from,
		"DESTINATION_CITY" => $to,
		"OUTWARD_DATE" => $outward,
		"OUTWARD_TIME" => $outward_h,
		"INWARD_DATE" => $inward,
		"INWARD_TIME" => $inward_h,
		"COMFORT_CLASS" => $comfort,
		"NB_TYPO_ADULT" => $passengers,
		"DIRECT_TRAVEL_CHECK" => "off",
		"FLEXIBLE" => "off"
	);
		
	return $baseurl . http_build_query($arguments);
}

/* testing...


function ahref($link, $name=NULL) {
	return '<a href="' . $link . '">' . (isset($name) ? $name : $link) . '</a>';
}


echo '<a href="' . linkto_voyages_sncf_com('', 'TAIN GARE SNCF (26)', '2011-11-11T06:52:01', '2011-11-13T18:52:01') . '">Réservez votre train</a>';

echo '<br>';

print ahref(linkto_voyages_sncf_com('', 'TAIN GARE SNCF (26)'));
print '<br/><br/><br/>';

print ahref(linkto_voyages_sncf_com('', 'TAIN GARE SNCF (26)', '2011-11-30T06:00:00Z'));
print '<br/><br/><br/>';

print ahref(linkto_voyages_sncf_com('VALENCE', 'TAIN GARE SNCF (26)', '2011-11-30T06:00:00Z', '2011-12-03T16:00:00Z'));
print '<br/><br/><br/>';

//print ahref(linkto_voyages_sncf_com('', 'TAIN GARE SNCF (26)', new DateTime('2011-11-11T06:52:01+00:00', new DateTimeZone("Europe/Paris")), new DateTime('2011-11-13T18:52:01+00:00', new DateTimeZone("Europe/Paris"))));
print '<br/><br/><br/>';

print ahref(linkto_voyages_sncf_com('', 'TAIN GARE SNCF (26)', '2011-11-11T07:00:00', '2011-11-13T18:52:01+00:00'));
print '<br/><br/><br/>';


print ahref(linkto_voyages_sncf_com('', 'BEAUVAIS', '2015-07-04T07:00:00', '2015-07-11T18:00:00+00:00'));
print '<br/><br/><br/>';

*/

?>