ho questo script ma mi da errore nelle variabili $_POST che ho messo.


<?php
session_start();
?><?





$username=$_POST['username'],
$password=$_POST['password'],


// Criptazione MD5 Password
$passwordcript = md5('$password');



$connessione=mysql_connect("localhost", "");
$selezione_db=mysql_select_db("guest_book", $connessione);




$inserimento=mysql_query( "insert into messaggi (id_user,username,password,user,gender,date_of_bir th,country,test_arousal_photo1,test_valence_photo1 ,test_arousal_photo2,test_valence_photo2,test_arou sal_photo3,test_valence_photo3,test_arousal_photo4 ,test_valence_photo4,test_arousal_photo5,test_vale nce_photo5,test_arousal_photo6,test_valence_photo6 ,test_arousal_photo7,test_valence_photo7,test_arou sal_photo8,test_valence_photo8,test_arousal_photo9 ,test_valence_photo9,test_arousal_photo10,test_val ence_photo10,date) values ('" . $_SESSION['id_user']. "',$username=$_POST['username'],$password=$_POST['password'], '" . $_SESSION['user']. "','" . $_SESSION['gender'] . "','" . $_SESSION['year'] . "-" . $_SESSION['month'] . "-" . $_SESSION['day'] . "','" . $_SESSION['country'] . "','" . $_SESSION['test_arousal_photo1'] . "','" . $_SESSION['test_valence_photo1'] . "','" . $_SESSION['test_arousal_photo2'] . "','" . $_SESSION['test_valence_photo2'] . "','" . $_SESSION['test_arousal_photo3'] . "','" . $_SESSION['test_valence_photo3'] . "','" . $_SESSION['test_arousal_photo4'] . "','" . $_SESSION['test_valence_photo4'] . "','" . $_SESSION['test_arousal_photo5'] . "','" . $_SESSION['test_valence_photo5'] . "','" . $_SESSION['test_arousal_photo6'] . "','" . $_SESSION['test_valence_photo6'] . "','" . $_SESSION['test_arousal_photo7'] . "','" . $_SESSION['test_valence_photo7'] . "','" . $_SESSION['test_arousal_photo8'] . "','" . $_SESSION['test_valence_photo8'] . "','" . $_SESSION['test_arousal_photo9'] . "','" . $_SESSION['test_valence_photo9'] . "','" . $_SESSION['test_arousal_photo10'] . "','" . $_SESSION['test_valence_photo10'] . "', now())" );


mysql_close($connessione);

?>

la pagina del form è quasta:
<?php
session_start();
?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>

<head>
<meta http-equiv="content-type" content="text/html; charset=iso-8859-1">
<meta name="author" content="Skyline">

<title>Login</title>
</head>

<body>
<form action="register.php" name="register" method="POST">
Username<input type="text" name="username">
Password<input type="password" name="password">


<input type="submit" value="Iscriviti">


</body>
</html>