That works great.
Last question for this topic. (I hope)
Previously I extracted information from a URL, namely a product ID
From your answer:
this way the session will only get set if the job_id querysting variable exists.
once it is set, you should be able to use:
echo "Job identification=". $_SESSION['PBksID'];
How do I add the value/job_id number to a new field/column in my orders data base?