What is the process of parsing a GPX waypoint file using PHP?

Parsing a GPX waypoint file using PHP involves reading the XML data from the file, extracting the necessary information such as latitude and longitude of each waypoint, and storing it in a usable format for further processing. This can be achieved by using PHP's built-in SimpleXML extension to parse the XML data and extract the required waypoint information.

// Load the GPX file
$xml = simplexml_load_file('waypoints.gpx');

// Loop through each waypoint
foreach ($xml->wpt as $waypoint) {
    $lat = (float) $waypoint['lat'];
    $lon = (float) $waypoint['lon'];
    
    // Do something with the latitude and longitude values
    echo "Latitude: $lat, Longitude: $lon\n";
}