Deployment\Helpers::fetchUrl PHP Method

    public static function fetchUrl($url, &$error, array $postData = NULL)
    {
        if (extension_loaded('curl')) {
            $ch = curl_init($url);
            $options = [CURLOPT_RETURNTRANSFER => 1, CURLOPT_FOLLOWLOCATION => 1];
            if ($postData !== NULL) {
                $options[CURLOPT_POST] = TRUE;
                $options[CURLOPT_POSTFIELDS] = $postData;
            }
            curl_setopt_array($ch, $options);
            $output = curl_exec($ch);
            if (curl_errno($ch)) {
                $error = curl_error($ch);
            } elseif (($code = curl_getinfo($ch, CURLINFO_HTTP_CODE)) >= 400) {
                $error = "responds with HTTP code {$code}";
            }
        } else {
            $output = @file_get_contents($url, FALSE, stream_context_create(['http' => $postData === NULL ? [] : ['method' => 'POST', 'header' => 'Content-type: application/x-www-form-urlencoded', 'content' => http_build_query($postData, NULL, '&')]]));
            $error = $output === FALSE ? preg_replace("#^file_get_contents\\(.*?\\): #", '', error_get_last()['message']) : NULL;
        }
        return (string) $output;
    }