I love your phpgedview and my family use it extensively. Actually, my dad is the main contributor.
Though, because my wife is from Vietnam, and I would like to encourage her family to contribute in the genealogy, I followed the model of Places/FRA to create Places/VNM. Though, I found that the Vietnamese characters are causing troubles. So, I modified the placelist.php and strings.js so the Vietnamese characters are properly handled.
All the gif pictures are original work.
I am not a developer nor a talented programmer, but just enthusiast and willing to help. So, I hope I didn't make mistake, but so far, on my website, everything is working fine.