E.g.
// GET request
$web->get('https://...');
// POST request
$response = $web->post('https://...', [
'param' => 'first param',
]);
// ...
This could be done either directly in PHPScraper or built upon another specialized lib such as Symfony HTTP. Exposing the functionality of the existing dependency sounds like a reasonable way to go, if the idea is of interest.