I would like to perform in ss the
$_GET and $_SESSION of php.
A step by step answer or tutorial would help.
basically I wanna fetch a variable through the URL (i.e. index.php?id='foo') or through starting a SESSION. please help. thanks.

the main reason I'm doing this is because I wanna open a pop up window when the links are clicked.
basically in php <a href="index.php?id=$ID">$text</a>, any solutions for this?

From a controller: $this->request->getVar('ID');