A lot of times, programmers do things that many people might find pointless... I don't know how many different "new operating systems" or "new programming languages" I saw come from the CS Department in 9 years spent working at a college. At least there's a snowball's chance in hell more than 2 people in the whole world will ever want to use PHP on Android.
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At least one person is benefiting from this, having fun & gaining experience by creating this project.
Other people might benefit too, or perhaps not. There's no extra charge.
A lot of times, programmers do things that many people might find pointless... I don't know how many different "new operating systems" or "new programming languages" I saw come from the CS Department in 9 years spent working at a college. At least there's a snowball's chance in hell more than 2 people in the whole world will ever want to use PHP on Android.