How to make asynchronous HTTP requests in PHP

+1 vote
Is there a way in PHP to make asynchronous HTTP calls? I don't care about the response, I just want to do something like file_get_contents(), but not wait for the request to finish before executing the rest of my code. This would be super useful for setting off "events" of a sort in my application, or triggering long processes.

Any ideas?
Sep 17, 2020 in PHP by kartik
• 37,510 points
2,278 views

2 answers to this question.

0 votes

Hello @kartik,

Use this code:

function post_without_wait($url, $params)
{
    foreach ($params as $key => &$val) {
      if (is_array($val)) $val = implode(',', $val);
        $post_params[] = $key.'='.urlencode($val);
    }
    $post_string = implode('&', $post_params);

    $parts=parse_url($url);

    $fp = fsockopen($parts['host'],
        isset($parts['port'])?$parts['port']:80,
        $errno, $errstr, 30);

    $out = "POST ".$parts['path']." HTTP/1.1\r\n";
    $out.= "Host: ".$parts['host']."\r\n";
    $out.= "Content-Type: application/x-www-form-urlencoded\r\n";
    $out.= "Content-Length: ".strlen($post_string)."\r\n";
    $out.= "Connection: Close\r\n\r\n";
    if (isset($post_string)) $out.= $post_string;

    fwrite($fp, $out);
    fclose($fp);
}
Hope it helps!!
Thank you!!
answered Sep 17, 2020 by Niroj
• 82,880 points
–1 vote
file_get_contents will do what you want

$output = file_get_contents('http://www.example.com/');
echo $output;
answered Sep 22, 2020 by Rajiv
• 120 points

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