/**
* This function calculates the sum of 2 variables
* @access public
* @author Eleri<*****@*****.**>
* @return number result
*/
public static function calculate()
{
if (isset($_GET['first'])) {
Calculator::$firstVariable = filter_var($_GET['first'], FILTER_VALIDATE_FLOAT);
}
if (isset($_GET['second'])) {
Calculator::$secondVariable = filter_var($_GET['second'], FILTER_VALIDATE_FLOAT);
}
$result = Calculator::$firstVariable + Calculator::$secondVariable;
return $result;
}
