php man page for session_status

SESSION_STATUS(3)							 1							 SESSION_STATUS(3)

session_status - Returns the current session status

SYNOPSIS
       int session_status (void  )

DESCRIPTION
       session_status(3) is used to return the current session status.

RETURN VALUES
	      o PHP_SESSION_DISABLED if sessions are disabled.

	      o PHP_SESSION_NONE if sessions are enabled, but none exists.

	      o PHP_SESSION_ACTIVE if sessions are enabled, and one exists.

SEE ALSO 
session_start(3).
PHP Documentation Group 													 SESSION_STATUS(3)