php man page for session_abort

SESSION_ABORT(3)							 1							  SESSION_ABORT(3)

session_abort - Discard session array changes and finish session

SYNOPSIS
       void session_abort (void  )

DESCRIPTION
       session_abort(3) finishes session without saving data. Thus the original values in session data are kept.

RETURN VALUES
	No value is returned.

SEE ALSO
       $_SESSION,  The session.auto_start configuration directive , session_start(3), session_reset(3), session_commit(3).

PHP Documentation Group 													  SESSION_ABORT(3)