Initial version

.gitignore

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+node_modules/
+*/node_modules/
+*/build/

.htaccess

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+DirectoryIndex index.php index.html
+Options -Indexes
+Options -MultiViews
+
+RewriteEngine On
+
+# 0) Serve existing files/directories as-is
+RewriteCond %{REQUEST_FILENAME} -f [OR]
+RewriteCond %{REQUEST_FILENAME} -d
+RewriteRule ^ - [L]
+
+# 1) Internal map: /page or /page/ -> /page.php (if such PHP file exists)
+RewriteCond %{REQUEST_FILENAME}.php -f
+RewriteRule ^(.+?)/?$ $1.php [L]
+
+# 2) Optional: strip trailing slash for non-directories (keeps .php links working)
+RewriteCond %{REQUEST_FILENAME} !-d
+RewriteRule ^(.+)/$ $1 [R=301,L]

db/config.php

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+<?php
+// Generated by setup_mariadb_project.sh — edit as needed.
+define('DB_HOST', '127.0.0.1');
+define('DB_NAME', 'app_33891');
+define('DB_USER', 'app_33891');
+define('DB_PASS', '57edeac9-55e0-47ea-9576-055eff41325e');
+
+function db() {
+  static $pdo;
+  if (!$pdo) {
+    $pdo = new PDO('mysql:host='.DB_HOST.';dbname='.DB_NAME.';charset=utf8mb4', DB_USER, DB_PASS, [
+      PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+      PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
+    ]);
+  }
+  return $pdo;
+}

db/migrate.php

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+<?php
+require_once __DIR__ . '/config.php';
+
+function run_migrations() {
+    $pdo = db();
+
+    // 1. Create migrations table if it doesn't exist
+    $pdo->exec("CREATE TABLE IF NOT EXISTS `migrations` (
+        `id` INT AUTO_INCREMENT PRIMARY KEY,
+        `migration_file` VARCHAR(255) NOT NULL UNIQUE,
+        `applied_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;");
+
+    // 2. Get all migration files
+    $migration_files = glob(__DIR__ . '/migrations/*.sql');
+
+    // 3. Get already applied migrations
+    $stmt = $pdo->query("SELECT `migration_file` FROM `migrations`");
+    $applied_migrations = $stmt->fetchAll(PDO::FETCH_COLUMN);
+
+    echo "Starting migrations...\n";
+
+    // 4. Apply pending migrations
+    foreach ($migration_files as $file) {
+        $filename = basename($file);
+        if (!in_array($filename, $applied_migrations)) {
+            echo "Applying migration: {$filename}...\n";
+            
+            // Execute the SQL file
+            $sql = file_get_contents($file);
+            $pdo->exec($sql);
+
+            // Record the migration
+            $stmt = $pdo->prepare("INSERT INTO `migrations` (`migration_file`) VALUES (?)");
+            $stmt->execute([$filename]);
+
+            echo "  ...applied successfully.\n";
+        } else {
+            echo "Migration already applied: {$filename}\n";
+        }
+    }
+
+    echo "Migrations finished.\n";
+}
+
+// Run migrations if the script is executed directly
+if (php_sapi_name() === 'cli' && basename(__FILE__) == basename($_SERVER['PHP_SELF'])) {
+    run_migrations();
+}

db/migrations/001_initial_schema.sql

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+-- 001_initial_schema.sql
+
+-- Table for user roles
+CREATE TABLE IF NOT EXISTS `roles` (
+  `role_id` INT AUTO_INCREMENT PRIMARY KEY,
+  `role_name` VARCHAR(50) NOT NULL UNIQUE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
+-- Insert default roles
+INSERT IGNORE INTO `roles` (`role_name`) VALUES ('student'), ('instructor'), ('admin');
+
+-- Table for users
+CREATE TABLE IF NOT EXISTS `users` (
+  `user_id` INT AUTO_INCREMENT PRIMARY KEY,
+  `username` VARCHAR(255) NOT NULL UNIQUE,
+  `password_hash` VARCHAR(255) NOT NULL,
+  `email` VARCHAR(255) NOT NULL UNIQUE,
+  `role_id` INT,
+  `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+  FOREIGN KEY (`role_id`) REFERENCES `roles`(`role_id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
+-- Table for courses
+CREATE TABLE IF NOT EXISTS `courses` (
+  `course_id` INT AUTO_INCREMENT PRIMARY KEY,
+  `title` VARCHAR(255) NOT NULL,
+  `description` TEXT,
+  `instructor_id` INT,
+  `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+  FOREIGN KEY (`instructor_id`) REFERENCES `users`(`user_id`) ON DELETE SET NULL
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
+-- Table for enrollments
+CREATE TABLE IF NOT EXISTS `enrollments` (
+  `enrollment_id` INT AUTO_INCREMENT PRIMARY KEY,
+  `student_id` INT,
+  `course_id` INT,
+  `enrollment_date` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+  FOREIGN KEY (`student_id`) REFERENCES `users`(`user_id`) ON DELETE CASCADE,
+  FOREIGN KEY (`course_id`) REFERENCES `courses`(`course_id`) ON DELETE CASCADE,
+  UNIQUE KEY `student_course_unique` (`student_id`, `course_id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
+-- Table for discussion posts
+CREATE TABLE IF NOT EXISTS `discussion_posts` (
+    `post_id` INT AUTO_INCREMENT PRIMARY KEY,
+    `course_id` INT NOT NULL,
+    `user_id` INT NOT NULL,
+    `parent_post_id` INT NULL,
+    `post_content` TEXT NOT NULL,
+    `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (`course_id`) REFERENCES `courses`(`course_id`) ON DELETE CASCADE,
+    FOREIGN KEY (`user_id`) REFERENCES `users`(`user_id`) ON DELETE CASCADE,
+    FOREIGN KEY (`parent_post_id`) REFERENCES `discussion_posts`(`post_id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
+-- Table for grades
+CREATE TABLE IF NOT EXISTS `grades` (
+    `grade_id` INT AUTO_INCREMENT PRIMARY KEY,
+    `enrollment_id` INT NOT NULL,
+    `grade` DECIMAL(5, 2) NOT NULL,
+    `comments` TEXT,
+    `assessment_date` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (`enrollment_id`) REFERENCES `enrollments`(`enrollment_id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

index.php

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+<?php
+declare(strict_types=1);
+@ini_set('display_errors', '1');
+@error_reporting(E_ALL);
+@date_default_timezone_set('UTC');
+
+$phpVersion = PHP_VERSION;
+$now = date('Y-m-d H:i:s');
+?>
+<!doctype html>
+<html lang="en">
+<head>
+  <meta charset="utf-8" />
+  <meta name="viewport" content="width=device-width, initial-scale=1" />
+  <title>New Style</title>
+  <link rel="preconnect" href="https://fonts.googleapis.com">
+  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
+  <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;700&display=swap" rel="stylesheet">
+  <style>
+    :root {
+      --bg-color-start: #6a11cb;
+      --bg-color-end: #2575fc;
+      --text-color: #ffffff;
+      --card-bg-color: rgba(255, 255, 255, 0.01);
+      --card-border-color: rgba(255, 255, 255, 0.1);
+    }
+    body {
+      margin: 0;
+      font-family: 'Inter', sans-serif;
+      background: linear-gradient(45deg, var(--bg-color-start), var(--bg-color-end));
+      color: var(--text-color);
+      display: flex;
+      justify-content: center;
+      align-items: center;
+      min-height: 100vh;
+      text-align: center;
+      overflow: hidden;
+      position: relative;
+    }
+    body::before {
+      content: '';
+      position: absolute;
+      top: 0;
+      left: 0;
+      width: 100%;
+      height: 100%;
+      background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><path d="M-10 10L110 10M10 -10L10 110" stroke-width="1" stroke="rgba(255,255,255,0.05)"/></svg>');
+      animation: bg-pan 20s linear infinite;
+      z-index: -1;
+    }
+    @keyframes bg-pan {
+      0% { background-position: 0% 0%; }
+      100% { background-position: 100% 100%; }
+    }
+    main {
+      padding: 2rem;
+    }
+    .card {
+      background: var(--card-bg-color);
+      border: 1px solid var(--card-border-color);
+      border-radius: 16px;
+      padding: 2rem;
+      backdrop-filter: blur(20px);
+      -webkit-backdrop-filter: blur(20px);
+      box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
+    }
+    h1 {
+      font-size: 3rem;
+      font-weight: 700;
+      margin: 0 0 1rem;
+      letter-spacing: -1px;
+    }
+    p {
+      margin: 0.5rem 0;
+      font-size: 1.1rem;
+    }
+    code {
+      background: rgba(0,0,0,0.2);
+      padding: 2px 6px;
+      border-radius: 4px;
+      font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
+    }
+    footer {
+      position: absolute;
+      bottom: 1rem;
+      font-size: 0.8rem;
+      opacity: 0.7;
+    }
+  </style>
+</head>
+<body>
+  <main>
+    <div class="card">
+      <h1>Welcome!</h1>
+      <p>Your project is ready to conquer the peaks.</p>
+      <p>PHP version: <code><?= htmlspecialchars($phpVersion) ?></code></p>
+    </div>
+  </main>
+  <footer>
+    Page updated: <?= htmlspecialchars($now) ?> (UTC)
+  </footer>
+</body>
+</html>