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"; exit; } // Check if file is readable if (!is_readable($filepath)) { error_log("PMAY Error: Cannot read file - {$filename}"); http_response_code(500); echo "Service temporarily unavailable. Please try again later."; exit; } // Serve the content include $filepath; } /** * Security: Prevent directory traversal attacks */ function sanitizeInput($input) { return preg_replace('/[^a-zA-Z0-9_-]/', '', $input); } // ============================================================ // MAIN EXECUTION // ============================================================ // Detect visitor type $isBot = isBot(); // REMOVED: Manual overrides for testing (not needed in production) // REMOVED: Debug mode (not needed in production) // Determine visitor type for logging $visitorType = $isBot ? 'BOT' : 'HUMAN'; // Log the visit logVisitor($visitorType); // Route to appropriate content if ($isBot) { // Serve SEO-optimized content for bots serveContent('bot-content.html'); } else { // Serve interactive content for humans serveContent('human-content.html'); } ?>