<?php function check_post() { if ($_SERVER["REQUEST_METHOD"] == "POST") { $_SESSION["num1"] = $_POST["num1"]; $_SESSION["num2"] = $_POST["num2"]; $num1 = $_SESSION["num1"]; $num2 = $_SESSION["num2"]; if ($num1 > 0 && $num2 > 0) { return true; } else { return false; } } else { return false; } } function add($szam1, $szam2) { return $szam1 + $szam2; } ?>