Grazie per la celere risposta  
 
Provando il seguente codice:
	Codice PHP:
	
if (isset($_POST['submit'])) {
$connection = mysql_connect('localhost', 'root', '') or die(mysql_error()); 
mysql_select_db('admin');
$email = $_POST['email'];
$password = $_POST['password'];
     $query="SELECT admin_level FROM site_user WHERE email='$email' AND password='$password'";
       $res=mysql_query($query);
         $type=mysq_result($res,0,"admin_level");
         switch($type)
         {
          case "0":header("Location:pagina1.php");break;
          case "1":header("Location:pagina2.php");break;
         }
}
?> 
<body>
<form id="form1" name="form1" method="post" action="index.php">
  <table width="273" border="0">
    <tr>
      <td width="119">Email</td>
      <td width="144"><label>
        <input type="text" name="email" id="email" />
      </label></td>
    </tr>
    <tr>
      <td>Password</td>
      <td><label>
        <input type="text" name="password" id="password" />
      </label></td>
    </tr>
    <tr>
      <td></td>
      <td><label>
        <input type="submit" name="submit" id="submit" value="Invia" />
      </label></td>
    </tr>
  </table>
</form> 
 
Ottengo 
	codice:
	Fatal error: Call to undefined function mysq_result() in C:\Programmi\EasyPHP5.3.0\www\sito\prova\index.php on line 20