Http\Request::get

public get ([mixed $name], [mixed $filters], [mixed $defaultValue], [mixed $notAllowEmpty], [mixed $noRecursive])

Gets a variable from the $_REQUEST superglobal applying filters if needed. If no parameters are given the $_REQUEST superglobal is returned

//Returns value from $_REQUEST["user_email"] without sanitizing
$userEmail = $request->get("user_email");

//Returns value from $_REQUEST["user_email"] with sanitizing
$userEmail = $request->get("user_email", "email");