[SOLVED] Persistent error "Cannot send session cookie - headers already sent by..."

[Edgewalker81]

I keep getting this error, even though I know my code is correct.  I'm attempted to use "session_start();" at the very beginning of a file.

[Edgewalker81]

Aha!

 

This was a little surprising, so it might help someone else to know.

 

If you are getting this error, and your code is correct, this may be your problem:

I have been saving my files in UTF-8 format, but it looks like the byte-order-mark was somehow being outputted at the start of the file.

The solution was to save as "ANSI" or "UTF without BOM," which may actually be equivalent.

[PFMaBiSmAd]

We already know that because it is a common problem.

 

Posting your actual error message and corresponding code would have allowed someone to directly provide that solution.