Superglobal Variables

Superglobal variables are $_GET, $_POST, $_SESSION, $_COOKIE and so forth. Superglobal have two benefits over registerd global variabals. They more secure and global in scope.

For ckeck superglobal variable using Cost Calculate script, save as the calculator.html as calculator_sga.html and open handle_calculator.php and add Super Global Variuables and save handle_calculator_sga.php and ckek the action.

Ex: calculator_sgv.html | handle_calculator_sgv.phps | handle_calculator_sgv.php