PHP header error

Bananna man

Hey,

I have done a few basic php websites directly on a live hosting server and have recently started a new project but this time i am running it on a local testing server. For this new project i have reused some code from my old site.

I am getting the following error [PHP]Warning: Cannot modify header information - headers already sent by (output started at d:\website\washtec\washtec_website\database.php:15) in d:\website\washtec\washtec_scripts\transact_user.php on line 26[/PHP] but i do not get this error on the older site which is directly on the live server.

Could this meanthat the error reporting is set up differently on the live server and this is why i dont see this same error on the old site? Is this error critical or could this same problem be on the old site but i just never realized because the error never showed?

jhegarty

Bananna man wrote:

I am getting the following error [PHP]Warning: Cannot modify header information - headers already sent by (output started at d:\website\washtec\washtec_website\database.php:15) in d:\website\washtec\washtec_scripts\transact_user.php on line 26[/PHP] but i do not get this error on the older site which is directly on the live server.

looks like you are trying to send the http header twice... whats on that line of code ?

Bananna man

When someone logs in they are redirected to another page on the site. The code is [PHP] header("Location: ".include_once $_SERVER.'/washtec_website/database.php'); [/PHP]

jhegarty

Bananna man wrote:

When someone logs in they are redirected to another page on the site. The code is [PHP] header("Location: ".include_once $_SERVER.'/washtec_website/database.php'); [/PHP]

looks like you are trying to send a second header... you browser already have received one and won't accept a second one...

for a simple solution just print a meta-refresh instead.....

akari no ryu

It's possible that you've written to the page before setting the header's reload option.

seamus

Is there also a chance that you have an include() that writes this header?

kdouglas

that error is generally caused when data is output before that header() call, check to make sure there is nothing that generates output before it, and also check that there are no spaces before the <?php tag as this can be a cause of this problem also.

daymobrew

jhegarty wrote:

for a simple solution just print a meta-refresh instead.....

No, don't do this - it results in unnecessary trips to the server.

Bananna man, can you do a 'wget --debug' on the problem URL? It might show you the headers being returned.
Another thing to try is to print use the included script in a normal page to ensure it is returning the expected value i.e.
[PHP]<?php echo include_once $_SERVER.'/washtec_website/database.php'; ?>[/PHP] or something like that.