This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
Headers already sent by PHP
When i use header( 'Location: index.php) in php code it display this error message.
Warning: Cannot modify header information - headers already sent by (output started at D:\xampp\htdocs\OnlineCode\online\survey\code\index.php:55) in D:\xampp\htdocs\OnlineCode\online\survey\code\index.php on line 62
how can i fixed this ?
make sure there is no echo or print statement before redirecting the header.It cause this error when we use echo or print before redirecting the header.
This occurs when output has already been started. You have to put the header() calls before any output occurs. Even spaces outside of php tags count as output. It may be helpful to just post the page's code where we can look at it.
Related
This question already has answers here:
How to fix "Headers already sent" error in PHP
(11 answers)
Closed 9 years ago.
The Insert works perfectly as tested that without the header redirect.
My problem is i'm using MYSQLI with Object oriented approach and still new to it. When i have the header redirect in there it tells me in the browser
"Warning: Cannot modify header information - headers already sent by
(output started at /home/hawkwsco/public_html/admin/include/template/doc.inc.php:1)
in /home/hawkwsco/public_html/admin/include/library/functions/process/process.inc.php on line 10"
My code is below:
<?php
require ($_SERVER['DOCUMENT_ROOT'].'/admin/include/config/config.inc.php');
$query = ("INSERT INTO page(pa_id, pa_page, pa_page_info) VALUES ('NULL', '{$_POST['page']}', '{$_POST['info']}')");
$mysqli->query($query);
header("Location: http://".$_SERVER['SERVER_NAME']."/admin/content.php");
exit;
?>
What am I doing wrong?
Most likely the file you are including has some text in it being output (even a newline at the end of the file is enough) causing the output to start before the header can be sent. I usually make sure my includes do not have a ?> at the end to avoid this problem.
Alternatively, you can use output buffering (ob_start()) to avoid any output being sent until you are ready. ob_start() must be called before any output to be effective.
This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
Headers already sent by PHP
i know this is a very common problem and I have googled alot for this but still no success. I am getting this error
Warning: Cannot modify header information - headers already sent by (output started at G:\xampp\htdocs\bidding_site\inc\header.php:88) in G:\xampp\htdocs\bidding_site\inc\add_project.php on line 8
I have checked that there is no white space before the header(). below is my code of add_project.php
<?php
if(isset($_SESSION['user'])) {
echo "hello world";
}
else {
header('location:../index.php');
}
?>
The error message has already explained what has happened; inc\header.php sent some output (e.g. with echo, print or by something outside the PHP tags) on line 88.
That said, this is an extremely common problem, there are other answers here on SO and googling shows plenty of answers, so this should be closed.
This question already has answers here:
How to fix "Headers already sent" error in PHP
(11 answers)
Reference - What does this error mean in PHP?
(38 answers)
Closed 9 years ago.
I have a simple code:
header("Location: http://www.wp.pl/");
end this code return:
Warning: Cannot modify header information - headers already sent by (output started at /var/www/plik.php:1) in /var/www/plik.php on line 2
I don't have any BOM, whitespaces etc. before "php" declaration.
What's wrong?
Clearly, you do have something sent already, but you can get around this by wrapping the PHP script in ob_start() / ob_end_flush().
1) Is that the only content on your page?
2) Is that script being included on a different page?
This warning is because when you write anything to the file, that is not the header, you cannot write to the header anymore. The header tells the script where to put its output, and if the header has been modified after content is written, then there is not guarantee of where it should put that content (as I understand it)
If this is not the only content on the page, check if anything above it is throwing an error or displaying anything.
If this is being included on a different page, check if that other page might be displaying something or throwing a warning/error.
Double check that there are no spaces or new lines after the closing php tag ?>. If there is, those spaces or new-lines get output to the browser, and since there is already output, you can't modify the header. A good practice is to just never include the closing php tag in your php files to prevent this from happening.
This question already has answers here:
How to fix "Headers already sent" error in PHP
(11 answers)
Closed 2 years ago.
Possible Duplicate:
Headers already sent by PHP
Getting the following error:
"Warning: Cannot modify header information - headers already sent by (output started at..."
for the following line:
echo '<center>Current Time is '. gmdate("H:i A") . ' GMT (Greenwich Mean Time or UTC)<br />';
If I comment it out it just throws up the error at the next echo statement. Thoughts on why PHP hates my echo statements so much?
Here is my include toward the bottom of the HTML:
<div id="saveCanForm" width="100%">
<?php include('savereport.php'); ?>
</div>
It's not the echo statements that are the problem. It looks like you have a header call somewhere later in the file, but you can't send headers once you output any text at all. You could either move the headers to the beginning of the script or alternatively use output buffering.
Because our echos are coming before you are sending the header which is not allowed. Ensure that header go before any of your output.
If you don't want to rearrange you can also use output buffering.
Headers are dealt with before there is any other output, so if you write something out then PHP can't properly send headers afterwards. At some point in your code you are giving HEAD instructions which hence fails. (There's technical reasons for this, like redirects and so forth)
Its not the echo which is the problem. It is most probably caused by a file that you have included in the .php file. Have you included a file at all? This will probably be at the top. If you included file statement is not at the top of the file make sure it is.
This question already has answers here:
How to fix "Headers already sent" error in PHP
(11 answers)
Closed 9 years ago.
I'm using a login-script and on my developmachine it worked perfectly but when I moved it to my webhost it stopped working.
The code can be viewed here: http://beta.yapaste.com/fm
The error I get when I login is
Warning: Cannot modify header information - headers already sent by (output started at /*/*/*/*/*/*/login.php:10) in /*/*/*/*/*/*/inc/login.php on line 43
But I can't find the error.
Thanks for answers, Victor.
Edit: Found the error, I included the file that I've got on yapaste in another file so the php-code wasent first.
On line 10 of login.php something is sent to the browser (white space between ?> and <?PHP tags count), at which point headers must be sent to. This triggers a warning when you try to then add more headers after this, on line 43.
You need to have a look at line 10 and prevent the output being sent, or use output buffering - your previous host could have had this on by default which might explain why it no longer works...
use ob_start(); at entry of your script to start buffering, but as Simon said, propably there is some white space wich is sended to browser befor you try to change headers.
Remeber, that you can omit ending php tag if you don't have any output code after, That will secure you from white spaces at end of file.
Also check for format of your source files - if they are encoded in UTF-8 with BOM, there are some starting characters that could be not shown in editor at beginning of the file.