root/trunk/bustracker.departures.getNext.php

<?
header("Content-type: text/xml");

$bus_stop_code = $_GET['bus_stop_code'];

if (!$bus_stop_code) die("Missing parameter: bus_stop_code");

$junk = getData($baseurl."display.php?clientType=b&&numberOfPassage=100&busStopCode=".$bus_stop_code);
$xml = simplexml_load_string($junk);
$xpath = $xml->xpath("//*[@id=\"displayDepartures\"]");

$returnxml = new SimpleXmlElement("<bustracker></bustracker>");
foreach (($xpath[0]->pre) as $pre) {
    // behold my mad reg-ex skillz
    preg_match("/(N*\d*) *([A-Z ]*)\**(\d*(:\d\d)*)/",$pre,$matches);
    $departure_node = $returnxml->addChild("departure");
    $departure_node->addChild("service",trim($matches[1]));
    $departure_node->addChild("destination",trim($matches[2]));
    if (strpos($matches[3],":")) {
        // if hours is less < current hour then add tomorrow's day before we strtotime it
        if (substr($matches[3],0,2) < date("h") ) {
            $tomorrow  = mktime(0, 0, 0, date("m")  , date("d")+1, date("Y"));
            $timediff = strtotime(date("m/d/y",$tomorrow)." ".$matches[3]) - time();
        }
        else {
            $timediff = strtotime($matches[3]) - time();
        }
        $minstogo = round($timediff/60,0);
        $timechild = $departure_node->addChild("mins",$minstogo);
        $timechild->addAttribute("estimated","true");
    }
    else {
        $departure_node->addChild("mins",trim($matches[3]));
    }
}
echo $returnxml->asXML();
?>