Untitled

<!DOCTYPE html>
    <head>
    <title>Prueba</title>
        <meta http-equiv="Content-Type" content="text/html;charset=utf-8">
        <script languaje="javascript">
            function habilita(form)
            {
    form.bildemu[0].disabled = true;
    form.bildemu[1].disabled = true;
    }
function deshabilita(form)
    {
        form.bildemu[0].disabled = false;
        form.bildemu[1].disabled = false;
    }
    </script>
</head>
    <body>
        <form action="procesaPrueba.php" method="post">
            <p>
            <label for="name">Apellido:</label>
            <input type="text" name="name"required id="name"=>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp
            <!--para introducir comentarios-->
            <label for="vorname">Nombre:</label>
            <input type="text" name="vorname"required id="vorname"></br>
            <i>Elige una lengua-B:</i>
            <input type="radio" name="b_sprache" value="Spanisch B"onClick="habilita(this.form)"> Español B
            <input type="radio" name="b_sprache" value="Italienisch B"onClick="habilita(this.form)"> Italiano B
            <input type="radio" name="b_sprache" value="Französisch B"onClick="habilita(this.form)"> Francés B </br>
            <i>Para las clases 12/13 me inscribo en las siguientes asignaturas:</i></br>
            <input type="radio" name="bildemu"   value="Arte">
            <label for="Arte">Arte</label>
            <input type="radio" name="bildemu"   value="Música">
            <label for="Musica">Música,</label>&nbsp; </br>
            <i>y</i>
            <input type="radio" name="ct" required id="ct" value="Computertechnik">
            <label for="ct">Técnica de ordenadores.</label></br>
            </br></br>
            <input type="submit" value="Enviar">
            <input type="reset">

            </br></br>
    </form>
</body>

<?php
     $bildemu=$_POST['bildemu'];
     $b_sprache=$_POST['b_sprache'];
     $name=$_POST['name'];
     $vorname=$_POST['vorname'];
     $ct=$_POST['ct'];
     $servername = "localhost";
     $username = "root";
     $password = "";
     $dbname = "schule3";

     $conn = new mysqli($servername, $username, $password, $dbname);
     if ($conn->connect_error) {
     die("Connection fallida: " . $conn->connect_error);
     }

     $sql = "INSERT INTO schule3(name, vorname, b_sprache, bildemu, ct)
     VALUES ('$name', '$vorname', '$b_sprache','$bildemu','$ct',)";

     if ($conn->query($sql) === TRUE) {
     echo "das Formular wurde geschickt!";
     } else {
     echo "Error: " . $sql . "<br>" . $conn->error;
     }

     $conn->close();