shell-php Curl Asynchronous request How to get results

 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;}?>

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 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;}?>

$a=exec($cmd, $output, $exit);

You can't use PHP's curl function.

Curl should not work, but callbacks can be invoked at the request address.
With Swoole, this network framework can

$ch = Curl_init ();
curl_setopt ($ch, Curlopt_url, $url);
curl_setopt ($ch, Curlopt_returntransfer, 1);
curl_setopt ($ch, curlopt_timeout,10);
$response = curl_exec ($ch);

Swoole can be asynchronous, and you're doing it in sync.

