SRM live data TDF2011 for Google Earth

<?php

/*
    Transmogrify data used by http://data.srmlive.de/TDF/ for use in Google Earth

    Version 2.0 by Mike Beggs 2011-07-18

    Usage:

        0. Place script on a server that has PHP
        1. Add 'Network Link' in Google Earth with address of script in 'Link' field
        2. Set Refresh interval of Network Link
        3. Enjoy
*/

//header('Content-Type: application/vnd.google-earth.kml+xml');
header('Content-Type: text/xml');

?><?xml version="1.0" encoding="UTF-8"?>
<kml xmlns="http://www.opengis.net/kml/2.2">
<Document>
<name>TDF GPS Data</name>
<Style id="sh_bike">
<IconStyle>
  <scale>1.0</scale>
  <Icon>
    <href>http://maps.google.com/mapfiles/kml/paddle/pink-blank.png</href>
  </Icon>
  <hotSpot x="0.5" y="0" xunits="fraction" yunits="fraction" />
</IconStyle>
<LabelStyle>
 <color>ff00ffff</color>
 <scale>0.8</scale>
</LabelStyle>
</Style>
<?php

$xml = simplexml_load_file('http://data.srmlive.de/TDF/drivers/gps1.xml');
$riderdata = explode("\n", file_get_contents('http://data.srmlive.de/TDF/drivers/rider_1.txt'));

$rider_team = array(
    'Jeremy Roy' => 'FDJ',
    'Daniel Oss' => 'LIQ',
    'Paolo Borghini' => 'LIQ',
    'Brian Vandborg' => 'SBS',
    'Christian Knees' => 'SKY',
    'Julien El Fares' => 'COF',
    'Romain Zingle' => 'COF',
    'Mickael Buffaz' => 'COF',
    'Andrey Zeits' => 'AST',
    'Thomas Vaitkus' => 'AST',
    'Markel Irizar' => 'RSH',
    'Brent Bookwalter' => 'BMC',
    'Michael Schaer' => 'BMC'
);

$rider = 0;

foreach($xml->marker as $marker) {

    if(($marker->attributes()->lat != 0) || ($marker->attributes()->lng != 0)){ // Exclude if rider is located in the Gulf of Guinea
?>
<Placemark>
    <name><?php

        $data = explode(';', trim($riderdata[$rider]));

        $name = ''.$marker->attributes()->name;

        echo $name.' #'.$data[0];

        if(array_key_exists($name, $rider_team)) {
            echo ' ('.$rider_team[$name].')';
        }

        // Note: I created this version of the script while these data fields were dead, so they may be labelled wrong.
        if($data[1] != '-') echo ' '.$data[1].'k'; // Speed
        if($data[2] != '-') echo ' '.$data[2].'r'; // Cadence
        if($data[3] != '-') echo ' ♥'.$data[3].''; // Heart rate
        if($data[4] != '-') echo ' '.$data[4].'W'; // Power output

    ?></name>
    <styleUrl>#sh_bike</styleUrl>
    <Point>
        <coordinates><?php echo $marker->attributes()->lng.','.$marker->attributes()->lat?></coordinates>
    </Point>
</Placemark>
<?php

        $rider++;
    }
}

?>
</Document>
</kml>