}
//is it a position message?
if ($parts[1] !== "3") {
continue;
}
$radioId = $helicopters[$parts[4]];
$lat = $parts[14];
$lon = $parts[15];
if (!$lat || !$lon) {
continue;
}
$time = date_parse($parts[6] . ' ' . $parts[7]);
$position_time = mktime($time['hour'], $time['minute'], $time['second'], $time['month'], $time['day'], $time['year']);
//check the time it was last entered into database by this station
if (!isset($sent[$radioId]) or $sent[$radioId] + $position_interval < time()) {
$coords = $converter->wgs84_to_osgb36($lat, $lon);
$data = ['userid' => $userid, 'password' => $password, 'x' => floor($coords[0]), 'y' => floor($coords[1]), 'validFor' => 120, 'radioId' => $radioId, 'type' => "aircraft", 'time' => $position_time];
$ch = curl_init($sendUrl);
# Form data string
$postString = http_build_query($data, '', '&');
# Setting our options
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $postString);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
# Get the response
$response = curl_exec($ch);
echo $response;
echo PHP_EOL;
curl_close($ch);
//store time last sent
$sent[$radioId] = time();