[thelist] Session cache limite and header information

Ian Anderson ian at zstudio.co.uk
Mon Apr 10 05:39:26 CDT 2006

Dan Parry wrote:
> The error seems to be saying that output has started in mysqlconnect.php...
> Are there any errors being thrown in that file? Does it echo anything or
> send any headers?

Or, check for whitespace like spaces or empty carriage returns in the 
included file.

I had this last year:

"In PHP, calls to header( "Location: whatever.php" ) were failing 
silently whenever an include file was used to validate the user's 
session data.

I thought it was something I was doing with cookies or session_start() 
in my included file, but no...

Turned out there was a space *after* the closing "?> " in the included 
file, which was getting written to the browser as unintentional output 
at the start of the HTML. Of course, calls affecting HTTP header will 
not work if output has already been written to the browser."
(tip from August 2005)



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