Header function doesn't appear to be working

metalhead41 · February 23, 2008

Quick one this time...

On my test server running php 5.2.5 the function header('Location: main.php'); moves the user to the user area after they have logged in.

On a live server runnign php 4.4.8 it's not working, instead I have to reclick on the staff are link which then moves me to the correct area.

Any help would be appreciated ???

kenrbnsn · February 23, 2008

Please post the relevant code between

tags.

Ken

metalhead41 · February 23, 2008

On another test server that is running php 5.2.2 it does the same thing. Looking at the logfiles I get this when logging in:

[23-Feb-2008 14:55:34] PHP Warning:  Cannot modify header information - headers already sent by (output started at C:\wamp\www\Websites\Erith\stafflogin.php:7) in C:\wamp\www\Websites\Erith\includes\login.php on line 24

This is the login.php script

<?php

$errorMessage = '';
if (isset($_POST['txtUserId']) && isset($_POST['txtPassword'])) {
include 'library/config.php';
include 'library/opendb.php';

$userId   = $_POST['txtUserId'];
$password = $_POST['txtPassword'];

// check if the user id and password combination exist in database
$sql = "SELECT user_name,account_type FROM users WHERE user_name = '$userId' AND user_password = md5('$password')";
$result = mysql_query($sql) or die('Query failed. ' . mysql_error());

if (mysql_num_rows($result) == 1) {
	$row = mysql_fetch_assoc($result);
	// the user id and password match, 
	// set the session
	$_SESSION['username'] = $_POST['txtUserId'];
	$_SESSION['account_type'] = $row['account_type'];
	$_SESSION['db_is_logged_in'] = true;

	// after login we move to the main page
	header('Location: main.php');
	exit;
} else {
	$errorMessage = 'Sorry, wrong user id / password';
}

include 'library/closedb.php';
}

?>

<?php
if ($errorMessage != '') {
?>
<p align="center"><strong><font color="#990000"><?php echo $errorMessage; ?></font></strong></p>
<?php
}
?>
			<div id="login">
				<form action="" method="post" name="frmLogin" id="frmLogin">
					<label>User Name:</label>
					<input name="txtUserId" type="text" id="txtUserId" />
					<label>Password:</label>
					<input name="txtPassword" type="password" id="txtPassword" />
					<label> </label>
					<input name="btnLogin" type="submit" id="btnLogin" value="Login" />
				</form>
			</div>

This is main.php

<?php
// like i said, we must never forget to start the session
session_start();
include 'library/config.php';
    include 'library/opendb.php';
// is the one accessing this page logged in or not?
if (!isset($_SESSION['db_is_logged_in']) || $_SESSION['db_is_logged_in'] !== true) {
// not logged in, move to login page
header('Location: stafflogin.php');

include 'library/closedb.php';
exit;
}
    
$admin = "1";
$user = "2";
?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>

	<title>Erith Secondary School :: A Foundation School and a Specialist School in Sports Mathematics & Computing</title>

	<style type="text/css" media="all"> @import "./scripts/main.css"; </style>
	<script type="text/javascript">			
		function delArticle(id, name)
		{
			if (confirm("Are you sure you want to delete '" + name + "'"))
			{
				window.location.href = 'main.php?del=' + id;
			}
		}
	</script>

</head>
<body>
	<div id="sitewrap">
		<?php include'includes/header.php';?>
		<?php include'includes/menu.php';?>

		<div id="contents">
			<?php include'includes/date.php'?>
			<p>Welcome <?php echo $_SESSION['username'];?> how are you today?</p>
			<p><a href="./includes/logout.php">Click here to Logout</a></p>

			<div id="download">
				<?php
				if($_SESSION['account_type'] == $admin){
					echo "You can use this to upload and download new memo's or bulletins.";?><br />
				<?php echo "Please only upload word files or PDF's. Make sure your files are labled appropriatley.";
					include 'includes/admin.php';
					}
				if($_SESSION['account_type'] == $user){
					echo "<p>Use these links to download the latest bulletin and memo.</p>";
					include 'includes/user.php';
					}
				?>
			</div>
			<p><a href="./includes/logout.php">Click here to Logout</a></p>
		</div>
		<?php include'includes/footer.php';?>
	</div>
</body>
</html>

metalhead41 · February 23, 2008

Nevermind, sorted it out... I didn't see the sticky about headers at the top ::)

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Header function doesn't appear to be working

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