How to Implement Asynchronous cURL Requests in PHP?

Asynchronous cURL Requests in PHP

Executing parallel curl requests can be beneficial for performance optimization. This article provides insights into achieving asynchronous execution using various methods.

Async cURL

Asynchronous execution using the built-in cURL functions requires the following approach:

<code class="php">curl_setopt($ch, CURLOPT_URL, $url);
 curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
 curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
 curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
 curl_setopt($ch, CURLOPT_USERPWD, $api_onfleet);
 curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
 curl_setopt($ch, CURLOPT_ENCODING, "");  
 curl_setopt($ch, CURLOPT_POST, true);
 curl_setopt($ch, CURLOPT_POSTFIELDS, $params);

$mh = curl_multi_init();
curl_multi_add_handle($mh,$session);
curl_multi_add_handle($mh,$ch);</code>

pThreads

pThreads offers another approach for asynchronous execution:

<code class="php">class Request1 extends Thread {
    public function run() {
        // Your code here
    }
}

class Request2 extends Thread {
    public function run() {
        // Your code here
    }
}

$req1 = new Request1();
$req2 = new Request2();
$req1->start();
$req2->start();</code>

Suggested Reading

• [curl_multi_init()](https://www.php.net/manual/en/function.curl-multi-init.php)
• [curl_multi_exec()](https://www.php.net/manual/en/function.curl-multi-exec.php)
• [curl_multi_add_handle()](https://www.php.net/manual/en/function.curl-multi-add-handle.php)
• [class::Thread](https://www.php.net/manual/en/class.thread.php)
• [Thread::start](https://www.php.net/manual/en/thread.start.php)

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