Name	Size	Mode	Actions
cache/	-	0755	rm
css/	-	0755	rm
.htaccess	2618	0644	editdlrm
ack.php	25283	0644	editdlrm
bank.php	19033	0644	editdlrm
daily_quiz.php	107398	0644	editdlrm
dashboard.php	27243	0644	editdlrm
distributed.php	27043	0644	editdlrm
help.php	22858	0644	editdlrm
institute.php	16928	0644	editdlrm
invite.php	26223	0644	editdlrm
leaderboard.php	37684	0644	editdlrm
personal.php	15432	0644	editdlrm
status.php	30253	0644	editdlrm
tasks.php	71075	0644	editdlrm

'/', 'domain' => '', // Empty for localhost compatibility 'secure' => false, // Allow HTTP for localhost 'httponly' => true, 'samesite' => 'Lax', 'lifetime' => 2592000 // 30 days cookie lifetime ]); session_start(); } // Correct path to db.php require_once __DIR__ . '/../db.php'; // ✅ PERFORMANCE: Local cache class for pages/cache directory class LocalSimpleCache extends SimpleCache { private static $cacheDir = __DIR__ . '/cache'; private static $defaultTTL = 300; public static function init() { if (!file_exists(self::$cacheDir)) { @mkdir(self::$cacheDir, 0755, true); } } public static function get($key) { self::init(); $file = self::$cacheDir . '/' . md5($key) . '.cache'; if (!file_exists($file)) return false; $data = @unserialize(file_get_contents($file)); if ($data === false) return false; if (time() > $data['expires']) { @unlink($file); return false; } return $data['value']; } public static function set($key, $value, $ttl = null) { self::init(); $ttl = $ttl ?? self::$defaultTTL; $file = self::$cacheDir . '/' . md5($key) . '.cache'; $data = ['value' => $value, 'expires' => time() + $ttl, 'created' => time()]; $fp = @fopen($file, 'c+'); if ($fp === false) return @file_put_contents($file, serialize($data)) !== false; $lockAcquired = false; for ($i = 0; $i < 10; $i++) { if (flock($fp, LOCK_EX | LOCK_NB)) { $lockAcquired = true; break; } usleep(500000); } if ($lockAcquired) { ftruncate($fp, 0); fwrite($fp, serialize($data)); flock($fp, LOCK_UN); fclose($fp); return true; } else { fclose($fp); return @file_put_contents($file, serialize($data)) !== false; } } public static function delete($key) { self::init(); $file = self::$cacheDir . '/' . md5($key) . '.cache'; return @unlink($file); } } if (!isset($_SESSION['user_logged_in']) || $_SESSION['user_logged_in'] !== true) { header('Location: ../student'); exit(); } $applicantId = (int)($_SESSION['applicant_id'] ?? 0); $userId = $_SESSION['user_id'] ?? ''; $userName = $_SESSION['user_name'] ?? 'Student'; try { // ✅ PERFORMANCE: Cache acknowledgment data for 5 minutes (rarely changes) $ackCacheKey = 'ack_data_' . $applicantId; $applicant = LocalSimpleCache::get($ackCacheKey); if ($applicant === false) { // ✅ OPTIMIZED: Single query to fetch applicant and user data together $stmt = $pdo->prepare(" SELECT a.*, u.user_id, u.bank_verified FROM applicants a LEFT JOIN users u ON a.applicant_id = u.applicant_id WHERE a.applicant_id = ? LIMIT 1 "); $stmt->execute([$applicantId]); $applicant = $stmt->fetch(PDO::FETCH_ASSOC); if ($applicant) { LocalSimpleCache::set($ackCacheKey, $applicant, 300); // Cache for 5 minutes } } if (!$applicant) { throw new Exception('Application not found'); } $bankVerified = $applicant['bank_verified'] ?? null; $scholarId = $applicant['user_id'] ?? ($_SESSION['user_id'] ?? ''); // ✅ OPTIMIZED: Fetch only recent documents with limit $docStmt = $pdo->prepare("SELECT * FROM documents WHERE applicant_id = ? ORDER BY uploaded_at DESC LIMIT 20"); $docStmt->execute([$applicantId]); $documents = $docStmt->fetchAll(PDO::FETCH_ASSOC); } catch (Exception $e) { $error_message = $e->getMessage(); } ?>