I don't plan on converting my software to PHP unless someone wanted to use it (i.e. pay). It works great for me, the potential issue if an LP used it on many computers it would require multiple copies of Filemaker Pro. Though it could also be accessed as is via web browser over intranet.
I honestly don't know if I plan to make it a commercial product. All this time I have been using it daily, and developing it towards use in my own LP, but client or clients would be very persuasive. It has taken hundreds of development hours, though that includes me (acting in EVERY position) doing every task and making a million growing and business decisions. I have a small number of plants via MMAR, each one has an ID indicating Strain-Generation-Serial, I can read on the printed label the estimated the plant must be transplanted, flipped or harvested. The database contains a journal that shows the date and time that EVERYTHING has been done to each plant.
The major advantage this system has over buying one that's currently for sale online, (where you have to email for a price because it's so high), is that I can add new features often within minutes. It's easily scalable and customizable to anyone's preferences.
Before this I was a photographer and also developed databases for other photographers. My own image database holds close to 200,000 images, and I know virtually everything about them at a glance.
I have retired from photography just last year, to pursue becoming an LP, but I am now looking at the state of the are "Drones" and their aerial capabilities. Things that make a go Hmmm....