<?php $islogin = false; if (isset($_GET["kod"]) && $_GET["kod"] == 1111 ) { echo "Üdvözöllek".$_GET["nev"]; $islogin = true; } ?> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>PHP form</title> </head> <body> <?php if ($islogin == "false") { ?> <form> <input type="text" name="nev" title="Adja meg a nevet"><br> <input type="number" name="kod" min="1000" max="5000" title="Adja meg a kódot"><br> <input type="submit" value="Belépés"> </form> <?php } ?> </body> </html>