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Source code

<?
session_start();
include("f_header.php");
if(!isset($submit)){
?>
				<form action="" method="post">
  					<table width="50%" align="center" border="1" bordercolor="#000000" style="border-collapse:collapse">
						<tr>
					      <td colspan="2" bgcolor="#cccccc"><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Bitte gib deine Daten ein:</td>
					    </tr>
					    <tr>
					      <td width="170"><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Username:</font></td>
					      <td width="230"><input type="text" name="usernamea" size="20" class="input"></td>
					    </tr>
					    <tr>
					      <td width="170"><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Passwort:</font></td>
					      <td width="230"><input type="password" name="pass" size="20" class="input"></td>
					    </tr>
					    <tr>
					      <td align="center" colspan="2"> <input type="submit" name="submit" value="Einloggen" class="button">
					      </td>
					    </tr>

					  </table>
					</form>
<?
}elseif(!isset($usernamea)){
	die("Du hast den Namen vergessen...");
}elseif(!isset($pass)){
	die("Du hast das Passwort vergessen!");
}else{
		$db = odbc_connect("homepage","","");
		$pass = md5($pass);
		$a = "SELECT username, passwort FROM benutzer WHERE username='$usernamea'";
		$select = odbc_exec($db, $a);
		odbc_fetch_row($select);
		$password = odbc_result($select,"passwort");
		$username = odbc_result($select,"username");
		if($username == $usernamea){
			if($password == $pass){
				$date = date("d.m.Y", time());
				$db = odbc_connect("homepage","","");
				$a = "UPDATE benutzer SET letzte_anmeldung='$date' WHERE username = '$usernamea'";
				$u = odbc_exec($db, $a);
				
				session_register("username");
				echo "Du hast dich erfolgreich eingeloggt, willkommen ".$username;
			}else{
				die("Du hast ein falsches Passwort eingegeben!");
			}
		}
		 odbc_close($db);

	}

?>