Cannot modify header information

bgara

I am getting this error, Please help me to resolve this issue....

/****************************************************************/
Warning: Cannot modify header information - headers already sent by (output started at /usr/local/psa/home/vhosts/sonicbusinessconsulting.com/httpdocs/dee/submitprofile.php:7) in /usr/local/psa/home/vhosts/sonicbusinessconsulting.com/httpdocs/dee/submitprofile.php on line 13

/****************************************************************/

This is my submitprofile.php

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<html>
<head>
<title>Desi Employment Exchange</title>
<link rel="stylesheet" href="theme/menu.css">
<script language="JavaScript" src="scripts/gen_validatorv2.js" type="text/javascript"></script>
<?php
require('userlogincheck.php');
if ($user_id == 0){
$host = $_SERVER['HTTP_HOST'];
$extra = 'guestaccess.html';
header("Location: http://$host/$extra");
exit;
}
?>

</head>

Houdini

This produces output so you can not use a header() function

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">


<html>

It is right off the bat you will have to plan where the output occurs within your script, or use a link but not a header.

Weedpacket

http://www.phpbuilder.com/board/showthread.php?t=10321460&highlight=modify+header+information
http://www.phpbuilder.com/board/showthread.php?t=10321123&highlight=modify+header+information
http://www.phpbuilder.com/board/showthread.php?t=10319353&highlight=modify+header+information
http://www.phpbuilder.com/board/showthread.php?t=10319215&highlight=modify+header+information
http://www.phpbuilder.com/board/showthread.php?t=10320750&highlight=modify+header+information

That's just five out of 417 hits, but you would have already searched so you would already have known that, right?

jazz_snob

slap this at very top of your submitprofile.php:

<?php ob_start(); ?>

Weedpacket

Yup. Nothing like sticking a bandaid on a stab wound, right?

bgara

jazz_snob wrote:
slap this at very top of your submitprofile.php:
<?php ob_start(); ?>

that worked........thank U

bgara

do I need to add ob_end_flush()

jazz_snob

and end of the request PHP will flush for you, so you don't "need" to add it

laserlight

Listen to what Weedpacket told you. jazz_snob's solution is not the right one here.

Think about it. You want to send a location header, i.e. the user will be redirected to some other page ASAP. Why do you then want to print anything in the page? Instead, change your code such that you only print the HTML code after it is known that you do not want to send the header.

You cannot output text before the last header is sent. Output buffering allows you to control the printing of the text, but in this case it is a hackish solution since you do not want to print anything at all (unless the location header is not sent (as in $user_id is 0), but in that case you do not need output buffering at all).