Posted by Richard Lynch on 03/15/05 18:13

> I have the same piece of PHP script running on either Apache2 or Tomcat.
> On Tomcat, I have the folllowing errors:
> 1- Cannot modify header information - headers already sent ....

Figure out what's sending out HTML / text / blank lines / error messages
*before* your header() call, and make it stop doing that.

> OR 2- Undefined index: error in ...

if (isset($_REQUEST['error'])){
//handle error here
}

>
> For one, I think this is because I am using the header PHP function.
> For two, I think this is because there is from time to time a http request
> parameter ("error") which not always defined.
>
> Could someone explain me why this is the case? And how I can change this
> behavior.
>
> Thanks.
> David Joffrin
> www.etradinginnovations.co.uk
>
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