How to send multithreaded data via cURL?

Question

PHP

I need to send more than one stream at the same time through cURL data to the server. I made one thread and it works fine, but I can no longer understand how to organize it.
I did it in one thread and it works.

$ch = curl_init($url);
  curl_setopt($ch, CURLOPT_HTTPHEADER, array(	
    'Content-Type: application/rss+xml',
    'Authorization: OAuth ' . TOKEN
   	));
  curl_setopt($ch, CURLOPT_POST, 1);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
   	curl_setopt($ch, CURLOPT_POSTFIELDS, $putData); 
  curl_close($ch);

I did this multithreaded, but it seems to me that it does not work as it should

foreach ($files as $i => $data) {
    $curl_arr[$i] = curl_init($url);
    curl_setopt($curl_arr[$i], CURLOPT_HTTPHEADER, array(
            'Content-Type: application/rss+xml',
            'Authorization: OAuth ' . TOKEN
        ));
    curl_setopt($curl_arr[$i], CURLOPT_POST, 1);
    curl_setopt($curl_arr[$i], CURLOPT_RETURNTRANSFER, true);
    curl_setopt($curl_arr[$i], CURLOPT_POSTFIELDS, $putData);
    curl_multi_add_handle($multi, $curl_arr[$i]);
}


$running = NULL;
do {
    curl_multi_exec($multi, $running);
} while ($running > 0);

foreach ($files as $i => $data) {
    curl_multi_remove_handle($multi, $curl_arr[$i]);
}
curl_multi_close($multi);

Please tell me what I'm doing wrong.
I found examples only for receiving multi-threaded and sending no.

Answer 1

Guzzle is very handy - docs.guzzlephp.org/en/stable/quickstart.html You can send requests asynchronously, you can wait until the entire request pool is completed and call the method when they complete, etc.