PHP cURL required only to send and not wait for response

Question

I need a PHP cURL configuration so that my script is able to send requests and ignore the answers sent by the API.

curl_setopt($ch,CURLOPT_URL,$url);
curl_se         


        

Answer 1

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 0);
curl_setopt($ch, CURLOPT_TIMEOUT_MS, 1);
curl_exec($ch);
curl_close($ch);

That works well for me.
Tested on PHP 7.1.14 Windows