How to implement a task in OOP?

Question

PHP

There is a task:
Two teams, A and B, are playing football. Someone makes a bet on the result of the match, for example, 1:2.
According to the result of the match, the real score becomes known, and we need to give out one or another prize. If someone guessed the exact score, he gets a big prize. If someone guessed the outcome of the match (winning one or another team, or a draw) - he receives a small prize. If he did not guess correctly, he receives a zero prize.
It is necessary to write a function that takes the expected and real scores as arguments, and returns an integer 0, 1 or 2 (zero, small or big prize).

Tell me how to do it in OOP, how to do it better, the very essence.

Answer 1

$points = //здесь счет
//сюда суй все что нужно;
$user_points = //что предсказал пользователь;

if( $points == $user_points) {
//здесь если юзер точно предсказал 
}
if( ! $points == $user_points) {
//здесь если юзер не предсказал
}

What's the catch ?