[PHP]Undefined index: p Opcje

[-Igraszki-]

Witam, mam problem z wlasnie ta komenda

Notice: Undefined index: p in /homez.506/biecg/www/index.php on line 16

Notice: Undefined index: lg in /homez.506/biecg/www/index.php on line 17

<?php
$p=$_GET['p'];
$lg=$_GET['lg'];
?>

oraz Use of undefined constant p - assumed 'p' in /homez.506/biecg/www/index.php on line 1 i 2

jak z tym wygrac?

[phpion]

[PHP] pobierz, plaintext 
$p = isset($_GET['p']) ? $_GET['p'] : 'domyslna wartosc';
[PHP] pobierz, plaintext