Warning: Cannot modify header information

Hi I get this error code when I try to run my login script.
Warning: Cannot modify header information - headers already sent by (output started at C:\Program Files\Apache Group\Apache2\htdocs\Rising sun\css.php:1) in C:\Program Files\Apache Group\Apache2\htdocs\Rising sun\loginmeth.php on line 24
This is the login script stored in loginmeth.php ;
[php]<?php require_once 'config.php';?>
<?php include 'opendb.php';?>
<?php $errorMessage = '';
if (isset($_POST['txtUserId']) && isset($_POST['txtPassword'])) {

$userId = $_POST['txtUserId'];
$password = $_POST['txtPassword'];
$_SESSION['userid'] = $userId;
// check if the user id and password combination exist in database
$sql = "SELECT *
FROM contactd
WHERE email = '$userId' AND password = PASSWORD('$password')";
//WHERE user_id = '$userId' AND user_password = PASSWORD('$password')";

$result = mysql_query($sql)
or die('Query failed. ' . mysql_error());

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

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

}
?>[/php]
and all i have in the css.php is
[php] <?php ?>
<style type="text/css">
body { background-color: #000000; font-family: Arial, Helvetica, sans-serif; color: #ffffff }
a:link { color: #ffffff }
a:visited { color: #ffffff }
a:hover { color: #000080 }
a:active { color: #ff6666 }
</style>[/php]
Im guessing that the problem is in the css.php but im not sure why. I check and removed all extra white spaces at the end and beginnning of the <?php ?> tags but it hasn't cured it.

Also what does" header('Location: cart.php'); " Im guessing it sends you to the page specified after you login ?

Dec 12 '06 #1

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2045

ronverdonk

4,258

Expert 4TB

Pity you don't show us how you include the css.php. But the problem is definitely in that file. Look at the first statement in there

Expand|Select|Wrap|Line Numbers

<?php ?>

that one generates a blank char to output and ... headers sent!
You should not use css in a php file. The usual way to include css is to have a separae CSS file, without any PHP statements or <style> statements and then do a

Expand|Select|Wrap|Line Numbers

<link rel="stylesheet" href="file.css" type="text/css" />

So remove the first statement in the css file.

Ronald :cool:

Dec 12 '06 #2

kempy535

My mistake! The css.php is called in all of the pages by,
[php]<?php require_once 'css.php';?>[/php]
It is under the <?php require_once 'config.php';?> on every page. Should I just use you code one the config page and then it will be called by the config page?

Dec 12 '06 #3

kempy535

Okay it moaned when I put the css script link in the config file so I have put it in all the files. The error that I had has gone away :) but has been replaced by another:(
Warning: Cannot modify header information - headers already sent by (output started at C:\Program Files\Apache Group\Apache2\htdocs\Rising sun\login.php:16) in C:\Program Files\Apache Group\Apache2\htdocs\Rising sun\loginmeth.php on line 24
This is the code for the login in page;
[php]<?php require_once 'config.php';?>
<link rel="stylesheet" href="rscss.css" type="text/css" />
<html>
<body>
<br />
<br />
<br />
<br />
<br />
<table width="50%" border="1">
<tr>
<th scope="col"><h2>Log In</h2> for existing customers</th>
<th scope="col"><h2>Register</h2>if you are new to the site</th>
</tr>
<tr>
<td><?php include 'loginmeth.php';?></td>
<td><?php require_once 'regmeth.php';?></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
</table>
<?php echo "Item picked = ". $_SESSION['cartadd'];?>
</body>
</html>[/php]
And this is the loginmeth page;
[php]<?php require_once 'config.php';?>
<?php include 'opendb.php';?>
<?php $errorMessage = '';
if (isset($_POST['txtUserId']) && isset($_POST['txtPassword'])) {

$userId = $_POST['txtUserId'];
$password = $_POST['txtPassword'];
$_SESSION['userid'] = $userId;
// check if the user id and password combination exist in database
$sql = "SELECT *
FROM contactd
WHERE email = '$userId' AND password = PASSWORD('$password')";
//WHERE user_id = '$userId' AND user_password = PASSWORD('$password')";

$result = mysql_query($sql)
or die('Query failed. ' . mysql_error());

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

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

}
?>
<?php include 'closedb.php';?>
// html table stuff after here[/php]

I dont understand why its complaining. Also it doesnt seem to link to the specifed page.

Dec 12 '06 #4

ronverdonk

4,258

Expert 4TB

I am sure you still have some outputting in one of your scripts, e.g. config.php or still the css file? Even a simple blank is enough to kill it. Have a look for certain,

Ronald :cool:

Dec 12 '06 #5

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