Eric Butera schreef:
On Jan 17, 2008 9:54 PM, Shelley Shyan <Shelley.Shyan@xxxxxxxxxxxxx> wrote:
Hi all,
Maybe this is a somehow stupid question.
I want to know how php could know whether session_start() has been called, that is, whether session has been started.
I Googled, but got little help.
Thank you for help!
Any tip is greatly appreciated.
Regards,
Shelley
One other thing is you won't be able to start a session if headers
have been sent. It is a good idea to use output buffering to help aid
with this.
no it's not a good idea to use output bufferin to 'help aid' this. instead
write code that is logically structured so that the initialization of your pages/app/scripts
occurs BEFORE any output is generated.
to avoid spurious output of whitespace avoid including the trailing '?>' is
included php[-only] files. (and ignore whatever Tedd says on the subject ;-)
If headers have been sent you'll get a nasty warning.
if (headers_sent()) {
echo "oops!";
}
use code to avoid warnings.
It can be a php.ini setting or you can simply call ob_start() on the
first line of your script.
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