There are php packages that run on andriod but as far as I know they are
only for developers. The install process would be to complex for users.
http://phpforandroid.net/
http://developer.android.com/sdk/index.html
It may be possable to package up an app with php/mysql but I would expect
there are many hurdles.
Perhaps porting to another language that will run on android would be better.
Lua runs on Andriod and I think this language runs on Lua
https://github.com/hagish/love-native-android