<?php
    // Dummy answers
    $ans1 = 3;
    $ans2 = 2;
    $ans3 = 7;

    $result = $ans1 == 3;
    $result += $ans2 == 2;
    $result += $ans3 == 1;
    
    echo "You got $result/3 questions right";

You got 2/3 questions right