shell-php curl asynchronous request how to get results

<code>
 function request($url, $payload) {

  $cmd = "curl -X POST -H 'Content-Type: application/json'";
  $cmd.= " -d '" . $payload . "' " . "'" . $url . "'";

  if (!$this->debug()) {
    $cmd .= " > /dev/null 2>&1 &";
  }

  //发送异步请求
  exec($cmd, $output, $exit);
  return $exit == 0;
}
?></code>

Reply content:

<code>
 function request($url, $payload) {

  $cmd = "curl -X POST -H 'Content-Type: application/json'";
  $cmd.= " -d '" . $payload . "' " . "'" . $url . "'";

  if (!$this->debug()) {
    $cmd .= " > /dev/null 2>&1 &";
  }

  //发送异步请求
  exec($cmd, $output, $exit);
  return $exit == 0;
}
?></code>

<code>$a=exec($cmd, $output, $exit);</code>

Can’t you use PHP’s curl function?

Using curl should not work, but you can call the callback at the request address.

You can use a network framework like swoole

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_TIMEOUT,10);
$response = curl_exec($ch );

swoole can be asynchronous, you can still do it synchronously