I'm trying to make a decision about which development environments to learn in order to extend the functionality of my MS Access app that has a MySQL database backend that usually sits on premise at my client locations. I've been looking at Rapid Application Development platforms, but most are kind of pricy. While these would allow mobile app development, I could also just connect my MySQL database to a responsive web design page via Apache and PHP for a decent desktop or mobile presentation as users will be company specific and accessing via VPN on a company network... usually. What are the typical options/recommendations to interact with a MySQL database that would give an old MS Access/VBA developer a quick path to building web based data entry form solutions for an exiting database? Are there any recommended tools out there I should be considering that are open source or low cost that would make the learning curve less steep?