Hi sir,
Gone through your requirements so you need interconnect your photosphere shots with google maps and also find the user's place by gps or they can choose their own place to view. I can do it , I have been working in PHP for 2 years and such jobs are my daily practice. I am developing infiniteWP(It can manage unlimited wordpress sites) and WP Time Capsule - wordpress plugin. Mostly I take care of both backend and frontend so I have good knowledge in PHP and web design. This is my beginning time on this site and hence you can see that I do have one user ratings/testimonials (5 star) to show you.I can assure you that if you work with me once, you will always work with me for these kind of projects. Feel free to have conversation with me. Thank you