I need to redirect to a page only once - problem more complex than meets the eye

[pvs1]

I've been going around in circles for days on this. I developed over 200 pages of code in a software package and have written the Login scripts in PHP. On about 100 pages are 3 hotlinks in iframe - some which may only be accessed if logged in. If I add php code to the top of the pages to be protected to redirect if not logged in, I get the famous headers already sent error. If I put the same code on a separate page (page1), all is well. There is something in the generated code that is sending headers I think

The only thing I can think to do is to have a conditional redirect on the calling page to page1 and if logged in return or else then redirect to login page, but obviously need to ensure I do not go into a loop. Any help would be greatly appreciated. I need to go live with this site today.....PLEAS E help

[Markus]

Can you provide some sample code? I can't visualize your problem.

[pvs1]

Can you provide some sample code? I can't visualize your problem.

Thanks for responding. I have found the problem after 4 days of intense irritation! It was BOM - I needed to set the code not to use charset=utf-8. Thanks awfully for being prepared to assist.

[Markus]

I was going to point you to my article on "headers already sent" next, which covers that issue briefly :P

Anyway, glad you got it sorted.

Mark.

[pvs1]

I was going to point you to my article on "headers already sent" next, which covers that issue briefly :P

Anyway, glad you got it sorted.

Mark.

I think that is where I eventually found the missing link and then saw that the software I was using was using UTF-8. Now I just need to figure out how to escape out of an iframe when redirecting...a ny ideas :)?