Member Avatar for veledrom

Hi,

I use this code in Windows (wamp), it works fine. When i use it in Ubuntu it generates this error "Warning: Cannot modify header information - headers already sent by (output started at /var/www/toycar/header.php:9) in /var/www/toycar/classes/class.basket.php on line 17"

There is no blank space anywhere. What do i do?

Thanks

<?php
require_once("classes/class.session.php");
$sess=new SBase();
$values=$sess->getSession();
list($user, $loginlogout)=$values;
if($loginlogout=="Logout"){
echo "hi";
}else{
echo "no";
}
?>
  • 5 Contributors
  • 6 Replies
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  • 2 Days Discussion Span
  • Latest Post Latest Post by EvolutionFallen
Member Avatar for almostbob

there arent 17 lines in this file, so is the cause in the included session handler at around line 16

Member Avatar for somedude3488

Line 9:

echo "no";

is the problem. You can't echo anything to the browser until after headers are sent.

Member Avatar for veledrom

Yes echo "no"; is the right one.

You can't echo anything to the browser until after headers are sent.

What shall i do in this case then?

Member Avatar for Graphix 
<?php
require_once("classes/class.session.php");
$sess=new SBase();
$values=$sess->getSession();
list($user, $loginlogout)=$values;
if($loginlogout=="Logout"){ // assuming that this means you are logged in
$response = "1";
}else{ // assuming that this means you are not logged in
$response = "2";
}
?>
<html>
<head>
<title>My php page</title>
</head>
<body>
<?php
if ($response == "1') {
echo "You are able to see this page, aint that cool!";
} 
if ($response == "2') {
echo "You are not logged in.... <a href=\"login.php\">Login</a>";
}
?>
</body>
</html>
Member Avatar for veledrom

No it doesn't work. I realised that this problem starts as soon as after first HTML code. In this case error line is <?php after <body> tag.

Member Avatar for EvolutionFallen

No it doesn't work. I realised that this problem starts as soon as after first HTML code. In this case error line is <?php after <body> tag.

If this PHP after the body tag has anything in it that affects the headers, such as a header("Location: URLHERE"); call or anything of the sort, it'll throw an error. You can't do anything to the headers once you start outputting to the file. So any header-modifying code must be done before your <html> tag (or DTD tag, assuming, hopefully, that you are using one).

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