php5

how to allow your code to store undetermined number of columns ?

Hi, I think my question might be unclear , but i would try to explain it by example . say that we had about 100 different car model , clearly all of the car would share common parts or specification but not all parts are shared between all of these 100 car brands what is the best practice of storing these specification in this case...

how amazon ec2 ,php5,android ?

i want to use amazon ec2 php library to run on android ? ...