<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <h1>Daten Ausgabe</h1>

    <?php
        // Variablen
        $vorname= $_REQUEST['vorname'];
        echo "Moin ".$vorname."! Du GEILE sau. <br>";
    ?>
</php>
</body>
</html>