Re: session error ... I think

I'm slowly beginning to undrestand this, but please bear with a php novice. When/how were the headers sent? In other words, how do I know that they have already been sent? Thanks for humoring me alex "Richard Lynch" <rich@phpbootcamp.com> wrote in message news:php.general-107088@news.php.net... > >what does this mean: > > > >Warning: Cannot send session cache limiter - headers already sent (output > >started at /home/.edy/alexross/bleen.net/forum/discussion_fns.php:88) in > >/home/.edy/alexross/bleen.net/forum/index.php on line 5 > > On line 88 in discussion_fns.php there is an echo or print or even just some > HTML, or *EVEN* just a blank line outside of <?php ?> tags. > > That is "content" which PHP had to send to the browser. > > Now, once PHP has to send content to the browser, it had to send all the > headers first, then a blank line, then the content. > > Pretty much, that's why headers are called headers -- They come at the > "head" of the HTML, with a blank line in between. > > Once all that went out to the browser, you can't call "header()" function, > because, like, the train has left the station. You can still send more HTML > (jump on a box car) but you can't put anything on the front of the train. > It's gone. > > -- > Like Music? http://l-i-e.com/artists.htm > Off-Topic: What is the moral equivalent of 'cat' in Windows?