Hi Peter,
what is your end goal?
Shortly, PHP sessions are used to keep a "state" between different requests while the SCORM tracking session depends on the <attempt> done by <a user> within <a SCO> of a package published in <an activity>, stored in the table named scorm_scoes_track:
- id
- userid
- scormid
- scoid
- attempt
- element
- value
- timemodified
They are unrelated.
HTH,
Matteo