how to detect if PHPSESSID is changed

[primepaid]

PHPSESSID Session Cookiehow to know if PHPSESSID is cahnged in the current session icouldn't find way to detect if this variable change is changesas i want to check if the user has modfy the PHPSESSID or delete it (as deleteing it cause to create new one .)and i can't save the value of this in session as all session are cleared when i delete PHPSESSID and aslo idont want to save it in session cookie