gistfile1.php

 protected function execute($link, $parameters = array(), $method = "GET", $headers = array(), $accessToken = null)
    {
        $parametersString = '';
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_URL, $link);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);

        if ($accessToken) {
            $headers[] = 'Authorization: Bearer '.$accessToken;
        }

        if ($method === 'POST') {
            curl_setopt($curl, CURLOPT_POST, count($parameters));
            curl_setopt($curl, CURLOPT_POSTFIELDS, http_build_query($parameters));
        }

        if ($headers) {
            curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
        }

        $out = curl_exec($curl);
        $info = curl_getinfo($curl);
        curl_close($curl);

        return $out;
    }