function rest_call($method, $url, $data = false, $contentType= false, $token 
= false) {
    $curl = curl_init(); if($token){ //Add Bearer Token header in the request 
        curl_setopt($curl, CURLOPT_HTTPHEADER, array(
            'Authorization: '.$token ));
    }
    switch ($method) { case "POST": curl_setopt($curl, CURLOPT_POST, 1); if 
            ($data){
                if($contentType){ curl_setopt($curl, CURLOPT_HTTPHEADER, 
                    array(
                        'Content-Type: '.$contentType ));
                }
                curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
            }
            break; case "PUT": curl_setopt($curl, CURLOPT_PUT, 1); break; 
        default:
            if ($data) $url = sprintf("%s?%s", $url, 
                http_build_query($data));
    }
    curl_setopt($curl, CURLOPT_URL, $url); curl_setopt($curl, 
    CURLOPT_RETURNTRANSFER, 1); $result = curl_exec($curl); 
    curl_close($curl); return $result;
}