Zploit 0-Day Shell

:: Editing File: front_result.php

<?php
session_start();
require_once "admin/db.php";

// Count attempt
$_SESSION['attempts']++;

$mcqs = $_SESSION['quiz'] ?? [];
$user_answers = $_POST['answer'] ?? [];

$score = 0;
$total = count($mcqs);
$results = [];

foreach ($mcqs as $q) {
    $correct = $q['correct_answer'];
    $user = $user_answers[$q['id']] ?? 'Not Attempted';

if ($user == $correct) {
        $score++;
    }

$results[] = [
        'question' => $q['question'],
        'correct' => $correct,
        'user' => $user
    ];
}
?>

<!DOCTYPE html>
<html>
<head>
    <title>Test Result</title>
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css">
</head>

<div class="container my-5">
    <div class="card shadow">
        <div class="card-header bg-dark text-white">
            <h4>Your Result</h4>
        </div>

<h3>Your Score: <span class="text-success"><?= $score ?>/<?= $total ?></span></h3>
            <h6>Total Attempts: <?= $_SESSION['attempts'] ?></h6>

<hr>

<h5>Question-wise Result:</h5>

<?php foreach ($results as $i => $r): ?>
                <div class="mb-3 p-3 border rounded bg-white">
                    <p><strong>Q<?= $i + 1 ?>. <?= $r['question'] ?></strong></p>
                    <p>Your Answer: <strong><?= $r['user'] ?></strong></p>
                    <p>Correct Answer: <strong class="text-success"><?= $r['correct'] ?></strong></p>

<?php if ($r['user'] == $r['correct']): ?>
                        <span class="badge bg-success">Correct</span>
                    <?php else: ?>
                        <span class="badge bg-danger">Wrong</span>
                    <?php endif; ?>
                </div>
            <?php endforeach; ?>

<a href="front_test.php" class="btn btn-primary">Try Again (New Random 10 Questions)</a>

</div>
    </div>
</div>

</body>
</html>