Odd error using PHP header()

Question

I'm getting the following error:

Warning: Cannot modify header information - headers already sent by (output started at /home/content/89/11421189/html/notfound.php:2) in /home/content/89/11421189/html/notfound.php on line 4

In my file 'notfound.php', which uses the code below:

<!DOCTYPE html>
<?php//Line 2
ob_start();
header('Location:http://www.website.com/index.php?page=404.php', true, 302);
exit;
?>
<head>
</head>
<html>
</html>

Note that there is NO whitespace before the PHP tag, or AFTER it. No matter where I move it to (even if it's all on the same line), that line is the culprit in the error. What am I doing wrong here?

[EDIT] Note: If I move the PHP to before the DOCTYPE tag, navigating to this file gives me an error 403: forbidden. The location is fine, since I can copy/paste it into the address bar without issues. Can you not pass GET arguments through header()?

remove everything in the file except <?php header('Location:http://www.website.com/index.php?page=404.php', true, 302); — user20232359723568423357842364
– user20232359723568423357842364, Commented Jul 12, 2013 at 17:37

markdwhite · Accepted Answer · 2013-07-12 17:33:15Z

6

You can't output headers after anything has been output. The DOCTYPE is output before the header().

answered Jul 12, 2013 at 17:33

markdwhite

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6 Comments

Rein Over a year ago

Well, I tried moving the PHP before the doctype, but then when I load the page it says ERROR 403: Forbidden.

saran banerjee Over a year ago

in that case maybe you need to change the mode of your file to 777 ie if your are using linux just execute this command - chmod 777 <your php file name>

Rein Over a year ago

I can copy/paste the location target URL into the address bar and it loads just fine.

markdwhite Over a year ago

@user2577320 - try replacing the URL with something that definitely works. Clearly, the original error is solved. Can you post the URL?

Rein Over a year ago

I just tried changing the target URL with google.com, and it still says forbidden. The test URL is side7entertainment.org

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