Untitled

<html>
    <body>

        <form action="strona2.php" method="POST">
            Podstawa<input type="number" min="0" name="p"><br>
            Wykładnik<input type="number" name="w"><br>
            <input type="submit">
        </form>
    </body>
</html>


<?php
$p = $_POST["p"];
$w = $_POST["w"];

if($p=="" || $w=="" || $w<0) echo "zjebane";
else{

$wynik = pow($p,$w);

echo $wynik;
}
?>