1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
<?php
if($_POST) {
require_once 'config.php';
$username = $_POST['username'];
$password = $_POST['password'];
$conn = mysql_connect($dbhost,$dbuser,$dbpass)
or die ('Error connecting to mysql');
mysql_select_db($dbname);
$query = sprintf("SELECT COUNT(id) FROM users WHERE UPPER(username) = UPPER('%s') AND password='%s'",
mysql_real_escape_string($username),
mysql_real_escape_string(md5($password)));
$result = mysql_query($query);
list($count) = mysql_fetch_row($result);
if($count == 1) {
$_SESSION['authenticated'] = true;
$_SESSION['username'] = $username;
$query = sprintf("UPDATE users SET last_login = NOW() WHERE UPPER(username) = UPPER('%s') AND password = '%s'",
mysql_real_escape_string($username),
mysql_real_escape_string(md5($password)));
mysql_query($query);
$query = sprintf("SELECT is_admin FROM users WHERE UPPER(username) = UPPER('%s') AND password='%s'",
mysql_real_escape_string($username),
mysql_real_escape_string(md5($password)));
$result = mysql_query($query);
list($is_admin) = mysql_fetch_row($result);
if($is_admin == 1) {
header('Location:admin.php');
} else {
header('Location:index.php');
}
} else { ?>
<span style='color:red'>Error: The password OR the username is wrong, please check it!</span>
<?php }
}
?>
Fehlermeldung hat geschrieben
Warning: Cannot modify header information - headers already sent by (output started at /users/cs2dcd/www/login.php:32) in /users/cs2dcd/www/login.php on line 60
Off Topic 
PHP session_start(); Frage
1 
Offline
