I now have successfully written a PHP program that goes to another website, downloads any number of tif files (one test used 48), combines them into a single tif file, converts the tiff to a single pdf file (48 tiffs become a 48 page pdf), and presents the new single pdf and single tif to the enduser for downloading or viewing. This was a nightmare and has cost me dearly. It is done and I can move on.
Husband to one wonderful wife, father to five fantastic children, juggler, technophile, freelancer, DIYer, adventurer, volunteer
Disclosure: I am a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for me to earn fees by linking to Amazon.com and affiliated sites.