Question

How can I retrieve GET values inside a PHP Class construct or functions?

Similar subject can be found here which I referred to session values, scope.
Access Session Variable within a class

Example which doesn’t retrieve value, set inside class construct.

$this->siteid = $_GET['siteid'];

or

$this->siteid = $_REQUEST['siteid'];

The purpose of the above is to retrieve id for testing params, goal is to hold these inside session, similar problem.

Answer 1

Can you please check what does var_dump($_REQUEST). I think that variable isn’t present in $_GET variable in that particular page in where you are accessing the class.