Grab the race number from a tracking software - php

Question

I want to grab this number (28/28) with PHP from a tracking software (https://aircrasher.livefpv.com/live/scoring/) for drone races. But I can't. I think it's a websocket, but I don't know how to retrieve information from it. I tried curl, I tried the "ultimate-web-scraper" from GitHub (https://github.com/cubiclesoft/ultimate-web-scraper). I tried a code example from another post from here (PHP simple web socket client) but I'm not able to get this number. Is it imposible to get this number (with php)?
This is what I tried so far with the help of "ultimate-web-scraper" (https://kleesit.de/beta/livetime/webscraper/test.php):
<?php
require_once "support/web_browser.php";
require_once "support/tag_filter.php";
// Retrieve the standard HTML parsing array for later use.
$htmloptions = TagFilter::GetHTMLOptions();
// Retrieve a URL (emulating Firefox by default).
$url = "https://aircrasher.livefpv.com/live/scoring/";
$web = new WebBrowser();
$result = $web->Process($url);
// Check for connectivity and response errors.
if (!$result["success"])
{
echo "Error retrieving URL. " . $result["error"] . "\n";
exit();
}
if ($result["response"]["code"] != 200)
{
echo "Error retrieving URL. Server returned: " . $result["response"]["code"] . " " . $result["response"]["meaning"] . "\n";
exit();
}
// Get the final URL after redirects.
$baseurl = $result["url"];
// Use TagFilter to parse the content.
$html = TagFilter::Explode($result["body"], $htmloptions);
// Find all anchor tags inside a div with a specific class.
// A useful CSS selector cheat sheet: https://gist.github.com/magicznyleszek/809a69dd05e1d5f12d01
echo "All the URLs:\n";
$result2 = $html->Find("div.someclass a[href]");
if (!$result2["success"])
{
echo "Error parsing/finding URLs. " . $result2["error"] . "\n";
exit();
}
foreach ($result2["ids"] as $id)
{
// Faster direct access.
echo "\t" . $html->nodes[$id]["attrs"]["href"] . "\n";
echo "\t" . HTTP::ConvertRelativeToAbsoluteURL($baseurl, $html->nodes[$id]["attrs"]["href"]) . "\n";
}
// Find all table rows that have 'th' tags.
// The 'tr' tag IDs are returned.
$result2 = $html->Filter($html->Find("tr"), "th");
if (!$result2["success"])
{
echo "Error parsing/finding table rows. " . $result2["error"] . "\n";
exit();
}
foreach ($result2["ids"] as $id)
{
echo "\t" . $html->GetOuterHTML($id) . "\n\n";
}
?>
This is what I tried with CURL and the help of a stackoverflow post (https://kleesit.de/beta/livetime/test2.php):
<?php
// random 7 chars digit/alphabet for "t" param
$random = substr(md5(mt_rand()), 0, 7);
$socket_server='https://aircrasher.livefpv.com/live/scoring/';
// create curl resource
$ch = curl_init();
//N°1 GET request
curl_setopt_array(
$ch,
[
CURLOPT_URL => $socket_server,
CURLOPT_RETURNTRANSFER => TRUE,
// since it is TRUE by default we should disable it
// on our localhost, but from real https server it will work with TRUE
CURLOPT_SSL_VERIFYPEER => FALSE
]);
// $output contains the output string
$output = curl_exec($ch);
$output=substr($output, 1);
echo $socket_server;
// server response in my case was looking like that:
// '{"sid":"4liJK2jWEwmTykwjAAAR","upgrades":["websocket"],"pingInterval":25000,"pingTimeout":20000,"maxPayload":1000000}'
var_dump($output);
$decod=json_decode($output);
// setting ping Interval accordingly with server response
$pingInterval = $decod->pingInterval;
//N°2 POST request
$socket_server_with_sid = $socket_server.'&sid='.$decod->sid;
curl_setopt_array(
$ch,
[
CURLOPT_URL => $socket_server_with_sid,
CURLOPT_POST => TRUE,
CURLOPT_TIMEOUT_MS => $pingInterval,
// 4 => Engine.IO "message" packet type
// 0 => Socket.IO "CONNECT" packet type
CURLOPT_POSTFIELDS => '40'
]);
$output = curl_exec($ch);
// ok
var_dump($output);
// Pervious 2 requests are called "hand shake" now we can send a message
// N°3 socket.emit
if ($output==='ok') {
curl_setopt_array(
$ch,
[
CURLOPT_URL => $socket_server_with_sid,
CURLOPT_TIMEOUT_MS => $pingInterval,
CURLOPT_POST => TRUE,
// 4 => Engine.IO "message" packet type
// 2 => Engine.IO "EVENT" packet type
CURLOPT_POSTFIELDS => '42["chat message","0devhost message 10"]'
]);
$output = curl_exec($ch);
// ok
echo $output.'<br/>';
echo $socket_server_with_sid;
}
// close curl resource to free up system resources
curl_close($ch);
?>