x.php

<?php
echo "Enter student name: ";
$student_name = trim(fgets(STDIN));

for($i = 1; $i <= 5; $i++) {
    echo "Enter Answer #$i: ";
    $answer[] = trim(fgets(STDIN));
}

$score = 0;
foreach($answer as $value) {
    switch($value) {
        case 1:
            $score += 1;
            break;
        case 2:
            $score += 2;
            break;
        case 3:
            $score += 3;
            break;
        case 4:
            $score += 4;
            break;
        case 5:
            $score += 5;
            break;
    }
}

printf(
    "%s, your total score is %d and your average score is %.2f\n",
    $student_name,
    $score,
    $score / 5
);