Table of Contents

FILE SHARING SYSTEM

Introduction

The File Sharing System is a secure web-based platform that enables users to upload, store, manage, and share files with others. The system provides both user and admin interfaces with features like file upload/download, folder organization, sharing permissions, and file management. Users can create accounts, upload files, organize them in folders, share files with other users or via public links, and track their file activities. Administrators can manage all files, users, monitor system usage, and maintain security settings.

Project Features

User Features:

User Registration and Login System
File Upload (Multiple files supported)
Folder Creation and Management
File/Folder Organization (Move, Copy, Rename, Delete)
File Sharing Options:
Share with specific users
Generate public shareable links
Set password protection for shared links
Set expiry dates for shared links
Download Files
File Preview for images, PDFs, text files
Search Files and Folders
Recent Files View
Storage Usage Statistics
User Profile Management
File Version History
Trash/Recycle Bin (Restore deleted files)

Admin Features:

Admin Login Dashboard
User Management (View, Add, Edit, Delete Users)
File Management (View all files, Delete inappropriate files)
Storage Monitoring (Total storage used per user)
System Settings Configuration
File Type Restrictions
Maximum Upload Size Settings
View System Logs
Manage File Sharing Links
Generate Reports

Project File Structure

file-sharing-system/
│
├── assets/
│   ├── css/
│   │   ├── style.css
│   │   ├── admin-style.css
│   │   └── responsive.css
│   ├── js/
│   │   ├── main.js
│   │   ├── file-manager.js
│   │   ├── upload.js
│   │   └── admin.js
│   └── images/
│       ├── icons/
│       └── avatars/
│
├── uploads/
│   ├── user_files/
│   │   └── [user_id]/
│   ├── temp/
│   └── thumbnails/
│
├── database/
│   └── file_sharing_system.sql
│
├── includes/
│   ├── config.php
│   ├── db_connection.php
│   ├── functions.php
│   ├── session.php
│   ├── auth.php
│   └── file_functions.php
│
├── admin/
│   ├── index.php
│   ├── login.php
│   ├── logout.php
│   ├── dashboard.php
│   ├── users.php
│   ├── add-user.php
│   ├── edit-user.php
│   ├── delete-user.php
│   ├── files.php
│   ├── view-file.php
│   ├── delete-file.php
│   ├── settings.php
│   ├── logs.php
│   ├── reports.php
│   └── profile.php
│
├── user/
│   ├── index.php
│   ├── register.php
│   ├── login.php
│   ├── logout.php
│   ├── dashboard.php
│   ├── my-files.php
│   ├── upload.php
│   ├── create-folder.php
│   ├── file-details.php
│   ├── download.php
│   ├── delete.php
│   ├── restore.php
│   ├── share.php
│   ├── shared-with-me.php
│   ├── shared-links.php
│   ├── trash.php
│   ├── search.php
│   ├── profile.php
│   └── settings.php
│
├── shared/
│   ├── index.php
│   └── access.php
│
├── api/
│   ├── upload.php
│   ├── delete.php
│   ├── rename.php
│   ├── move.php
│   └── get-files.php
│
├── index.php
├── 404.php
├── .htaccess
└── robots.txt

Database Schema (file_sharing_system.sql)

-- Create Database
CREATE DATABASE IF NOT EXISTS file_sharing_system;
USE file_sharing_system;
-- Table: users
CREATE TABLE users (
user_id INT PRIMARY KEY AUTO_INCREMENT,
username VARCHAR(50) UNIQUE NOT NULL,
email VARCHAR(100) UNIQUE NOT NULL,
password VARCHAR(255) NOT NULL,
full_name VARCHAR(100),
avatar VARCHAR(255),
role ENUM('user', 'admin') DEFAULT 'user',
storage_quota BIGINT DEFAULT 1073741824, -- 1GB default
storage_used BIGINT DEFAULT 0,
is_active BOOLEAN DEFAULT TRUE,
last_login DATETIME,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
);
-- Insert default admin
INSERT INTO users (username, email, password, full_name, role, storage_quota) 
VALUES ('admin', '[email protected]', MD5('Admin@123'), 'System Administrator', 'admin', 5368709120);
-- Table: folders
CREATE TABLE folders (
folder_id INT PRIMARY KEY AUTO_INCREMENT,
user_id INT NOT NULL,
parent_folder_id INT DEFAULT NULL,
folder_name VARCHAR(255) NOT NULL,
folder_path TEXT,
is_public BOOLEAN DEFAULT FALSE,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
FOREIGN KEY (user_id) REFERENCES users(user_id) ON DELETE CASCADE,
FOREIGN KEY (parent_folder_id) REFERENCES folders(folder_id) ON DELETE CASCADE,
INDEX idx_user_folders (user_id, parent_folder_id)
);
-- Table: files
CREATE TABLE files (
file_id INT PRIMARY KEY AUTO_INCREMENT,
user_id INT NOT NULL,
folder_id INT,
file_name VARCHAR(255) NOT NULL,
original_name VARCHAR(255) NOT NULL,
file_extension VARCHAR(50),
file_size BIGINT NOT NULL,
file_path VARCHAR(500) NOT NULL,
file_type VARCHAR(100),
mime_type VARCHAR(100),
is_public BOOLEAN DEFAULT FALSE,
download_count INT DEFAULT 0,
last_downloaded DATETIME,
is_deleted BOOLEAN DEFAULT FALSE,
deleted_at DATETIME,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
FOREIGN KEY (user_id) REFERENCES users(user_id) ON DELETE CASCADE,
FOREIGN KEY (folder_id) REFERENCES folders(folder_id) ON DELETE SET NULL,
INDEX idx_user_files (user_id, folder_id, is_deleted),
INDEX idx_file_search (file_name, file_extension)
);
-- Table: file_versions
CREATE TABLE file_versions (
version_id INT PRIMARY KEY AUTO_INCREMENT,
file_id INT NOT NULL,
version_number INT NOT NULL,
file_name VARCHAR(255) NOT NULL,
file_size BIGINT NOT NULL,
file_path VARCHAR(500) NOT NULL,
created_by INT,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
FOREIGN KEY (file_id) REFERENCES files(file_id) ON DELETE CASCADE,
FOREIGN KEY (created_by) REFERENCES users(user_id) ON DELETE SET NULL
);
-- Table: shared_links
CREATE TABLE shared_links (
link_id INT PRIMARY KEY AUTO_INCREMENT,
file_id INT,
folder_id INT,
share_token VARCHAR(100) UNIQUE NOT NULL,
share_password VARCHAR(255),
access_limit INT DEFAULT NULL,
access_count INT DEFAULT 0,
expiry_date DATETIME,
allow_download BOOLEAN DEFAULT TRUE,
created_by INT NOT NULL,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
FOREIGN KEY (file_id) REFERENCES files(file_id) ON DELETE CASCADE,
FOREIGN KEY (folder_id) REFERENCES folders(folder_id) ON DELETE CASCADE,
FOREIGN KEY (created_by) REFERENCES users(user_id) ON DELETE CASCADE,
CHECK (file_id IS NOT NULL OR folder_id IS NOT NULL)
);
-- Table: shared_with_users
CREATE TABLE shared_with_users (
share_id INT PRIMARY KEY AUTO_INCREMENT,
file_id INT,
folder_id INT,
shared_with_user_id INT NOT NULL,
shared_by_user_id INT NOT NULL,
permission ENUM('view', 'download', 'edit') DEFAULT 'view',
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
FOREIGN KEY (file_id) REFERENCES files(file_id) ON DELETE CASCADE,
FOREIGN KEY (folder_id) REFERENCES folders(folder_id) ON DELETE CASCADE,
FOREIGN KEY (shared_with_user_id) REFERENCES users(user_id) ON DELETE CASCADE,
FOREIGN KEY (shared_by_user_id) REFERENCES users(user_id) ON DELETE CASCADE,
CHECK (file_id IS NOT NULL OR folder_id IS NOT NULL),
UNIQUE KEY unique_share (file_id, folder_id, shared_with_user_id)
);
-- Table: file_activities
CREATE TABLE file_activities (
activity_id INT PRIMARY KEY AUTO_INCREMENT,
user_id INT NOT NULL,
file_id INT,
folder_id INT,
activity_type ENUM('upload', 'download', 'delete', 'restore', 'rename', 'move', 'share', 'view') NOT NULL,
ip_address VARCHAR(45),
user_agent TEXT,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
FOREIGN KEY (user_id) REFERENCES users(user_id) ON DELETE CASCADE,
FOREIGN KEY (file_id) REFERENCES files(file_id) ON DELETE SET NULL,
FOREIGN KEY (folder_id) REFERENCES folders(folder_id) ON DELETE SET NULL
);
-- Table: system_settings
CREATE TABLE system_settings (
setting_id INT PRIMARY KEY AUTO_INCREMENT,
setting_key VARCHAR(100) UNIQUE NOT NULL,
setting_value TEXT,
setting_description TEXT,
updated_by INT,
updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
);
-- Insert default settings
INSERT INTO system_settings (setting_key, setting_value, setting_description) VALUES
('max_upload_size', '10485760', 'Maximum file upload size in bytes (10MB)'),
('allowed_file_types', 'jpg,jpeg,png,gif,pdf,doc,docx,xls,xlsx,txt,zip', 'Comma separated list of allowed file extensions'),
('default_storage_quota', '1073741824', 'Default storage quota for new users (1GB)'),
('maintenance_mode', '0', 'System maintenance mode (0=off, 1=on)'),
('site_name', 'FileShare Pro', 'Website name'),
('site_url', 'http://localhost/file-sharing-system/', 'Website URL');
-- Table: login_logs
CREATE TABLE login_logs (
log_id INT PRIMARY KEY AUTO_INCREMENT,
user_id INT,
username VARCHAR(50),
login_status ENUM('success', 'failed') NOT NULL,
ip_address VARCHAR(45),
user_agent TEXT,
login_time TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
FOREIGN KEY (user_id) REFERENCES users(user_id) ON DELETE SET NULL
);

Core PHP Files

1. includes/config.php

<?php
// Database configuration
define('DB_HOST', 'localhost');
define('DB_USER', 'root');
define('DB_PASS', '');
define('DB_NAME', 'file_sharing_system');
// Application configuration
define('SITE_NAME', 'FileShare Pro');
define('SITE_URL', 'http://localhost/file-sharing-system/');
define('ADMIN_URL', SITE_URL . 'admin/');
define('USER_URL', SITE_URL . 'user/');
define('UPLOAD_DIR', $_SERVER['DOCUMENT_ROOT'] . '/file-sharing-system/uploads/');
define('USER_FILES_DIR', UPLOAD_DIR . 'user_files/');
define('TEMP_DIR', UPLOAD_DIR . 'temp/');
define('THUMBNAIL_DIR', UPLOAD_DIR . 'thumbnails/');
// File settings
define('MAX_FILE_SIZE', 10485760); // 10MB
define('ALLOWED_EXTENSIONS', 'jpg,jpeg,png,gif,pdf,doc,docx,xls,xlsx,txt,zip,rar');
define('DEFAULT_STORAGE_QUOTA', 1073741824); // 1GB
// Security settings
define('SESSION_TIMEOUT', 3600); // 1 hour
define('ENABLE_SSL', false);
define('HASH_COST', 10);
// Start session if not started
if (session_status() == PHP_SESSION_NONE) {
session_start();
}
// Error reporting (disable in production)
error_reporting(E_ALL);
ini_set('display_errors', 1);
// Timezone setting
date_default_timezone_set('UTC');
?>

2. includes/db_connection.php

<?php
require_once 'config.php';
class Database {
private $connection;
private static $instance = null;
private function __construct() {
$this->connect();
}
public static function getInstance() {
if (self::$instance === null) {
self::$instance = new Database();
}
return self::$instance;
}
private function connect() {
$this->connection = new mysqli(DB_HOST, DB_USER, DB_PASS, DB_NAME);
if ($this->connection->connect_error) {
die("Connection failed: " . $this->connection->connect_error);
}
$this->connection->set_charset("utf8mb4");
}
public function getConnection() {
return $this->connection;
}
public function escapeString($string) {
return $this->connection->real_escape_string(trim($string));
}
public function prepare($sql) {
return $this->connection->prepare($sql);
}
public function query($sql) {
return $this->connection->query($sql);
}
public function getLastInsertId() {
return $this->connection->insert_id;
}
public function affectedRows() {
return $this->connection->affected_rows;
}
public function beginTransaction() {
$this->connection->begin_transaction();
}
public function commit() {
$this->connection->commit();
}
public function rollback() {
$this->connection->rollback();
}
public function __destruct() {
if ($this->connection) {
$this->connection->close();
}
}
}
// Global database instance
$db = Database::getInstance();
$conn = $db->getConnection();
?>

3. includes/functions.php

<?php
require_once 'db_connection.php';
// Redirect to specified page
function redirect($url) {
header("Location: $url");
exit();
}
// Check if user is logged in
function isLoggedIn() {
return isset($_SESSION['user_id']) && !empty($_SESSION['user_id']);
}
// Check if admin is logged in
function isAdmin() {
return isset($_SESSION['user_role']) && $_SESSION['user_role'] === 'admin';
}
// Get current user ID
function getCurrentUserId() {
return $_SESSION['user_id'] ?? 0;
}
// Format file size
function formatFileSize($bytes) {
if ($bytes === 0) return '0 Bytes';
$k = 1024;
$sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB'];
$i = floor(log($bytes) / log($k));
return round($bytes / pow($k, $i), 2) . ' ' . $sizes[$i];
}
// Get file icon based on extension
function getFileIcon($extension) {
$icons = [
'pdf' => 'fa-file-pdf',
'doc' => 'fa-file-word',
'docx' => 'fa-file-word',
'xls' => 'fa-file-excel',
'xlsx' => 'fa-file-excel',
'jpg' => 'fa-file-image',
'jpeg' => 'fa-file-image',
'png' => 'fa-file-image',
'gif' => 'fa-file-image',
'txt' => 'fa-file-alt',
'zip' => 'fa-file-archive',
'rar' => 'fa-file-archive',
'mp3' => 'fa-file-audio',
'mp4' => 'fa-file-video',
'html' => 'fa-file-code',
'css' => 'fa-file-code',
'js' => 'fa-file-code'
];
return $icons[strtolower($extension)] ?? 'fa-file';
}
// Generate unique filename
function generateUniqueFilename($original_name) {
$extension = pathinfo($original_name, PATHINFO_EXTENSION);
return uniqid() . '_' . time() . '.' . $extension;
}
// Get user storage usage
function getUserStorageUsage($user_id) {
global $conn;
$sql = "SELECT SUM(file_size) as total FROM files WHERE user_id = ? AND is_deleted = 0";
$stmt = $conn->prepare($sql);
$stmt->bind_param("i", $user_id);
$stmt->execute();
$result = $stmt->get_result();
$row = $result->fetch_assoc();
return $row['total'] ?? 0;
}
// Update user storage used
function updateUserStorageUsed($user_id) {
global $conn;
$storage_used = getUserStorageUsage($user_id);
$sql = "UPDATE users SET storage_used = ? WHERE user_id = ?";
$stmt = $conn->prepare($sql);
$stmt->bind_param("ii", $storage_used, $user_id);
return $stmt->execute();
}
// Check if user has enough storage
function hasEnoughStorage($user_id, $file_size) {
global $conn;
$sql = "SELECT storage_quota, storage_used FROM users WHERE user_id = ?";
$stmt = $conn->prepare($sql);
$stmt->bind_param("i", $user_id);
$stmt->execute();
$result = $stmt->get_result();
$user = $result->fetch_assoc();
return ($user['storage_used'] + $file_size) <= $user['storage_quota'];
}
// Validate file extension
function isValidFileExtension($filename) {
$extension = strtolower(pathinfo($filename, PATHINFO_EXTENSION));
$allowed = explode(',', ALLOWED_EXTENSIONS);
return in_array($extension, $allowed);
}
// Generate share token
function generateShareToken() {
return bin2hex(random_bytes(32));
}
// Log user activity
function logActivity($user_id, $file_id, $folder_id, $activity_type) {
global $conn;
$ip_address = $_SERVER['REMOTE_ADDR'] ?? '';
$user_agent = $_SERVER['HTTP_USER_AGENT'] ?? '';
$sql = "INSERT INTO file_activities (user_id, file_id, folder_id, activity_type, ip_address, user_agent) 
VALUES (?, ?, ?, ?, ?, ?)";
$stmt = $conn->prepare($sql);
$stmt->bind_param("iiisss", $user_id, $file_id, $folder_id, $activity_type, $ip_address, $user_agent);
return $stmt->execute();
}
// Get folder path breadcrumbs
function getFolderPath($folder_id) {
global $conn;
$path = [];
$current_id = $folder_id;
while ($current_id) {
$sql = "SELECT folder_id, folder_name, parent_folder_id FROM folders WHERE folder_id = ?";
$stmt = $conn->prepare($sql);
$stmt->bind_param("i", $current_id);
$stmt->execute();
$result = $stmt->get_result();
if ($row = $result->fetch_assoc()) {
array_unshift($path, $row);
$current_id = $row['parent_folder_id'];
} else {
break;
}
}
return $path;
}
// Sanitize filename
function sanitizeFilename($filename) {
// Remove any path information
$filename = basename($filename);
// Replace spaces with underscores
$filename = str_replace(' ', '_', $filename);
// Remove any non-alphanumeric characters except dots and underscores
$filename = preg_replace('/[^a-zA-Z0-9._-]/', '', $filename);
return $filename;
}
// Create thumbnail for image
function createThumbnail($source_path, $destination_path, $max_width = 200, $max_height = 200) {
list($width, $height, $type) = getimagesize($source_path);
$ratio = min($max_width / $width, $max_height / $height);
$new_width = $width * $ratio;
$new_height = $height * $ratio;
$thumb = imagecreatetruecolor($new_width, $new_height);
switch ($type) {
case IMAGETYPE_JPEG:
$source = imagecreatefromjpeg($source_path);
break;
case IMAGETYPE_PNG:
$source = imagecreatefrompng($source_path);
imagealphablending($thumb, false);
imagesavealpha($thumb, true);
break;
case IMAGETYPE_GIF:
$source = imagecreatefromgif($source_path);
break;
default:
return false;
}
imagecopyresampled($thumb, $source, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
switch ($type) {
case IMAGETYPE_JPEG:
imagejpeg($thumb, $destination_path, 80);
break;
case IMAGETYPE_PNG:
imagepng($thumb, $destination_path, 8);
break;
case IMAGETYPE_GIF:
imagegif($thumb, $destination_path);
break;
}
imagedestroy($source);
imagedestroy($thumb);
return true;
}
// Get file preview URL
function getPreviewUrl($file) {
$extension = strtolower($file['file_extension']);
$previewable = ['jpg', 'jpeg', 'png', 'gif', 'pdf', 'txt'];
if (in_array($extension, $previewable)) {
return SITE_URL . 'user/preview.php?id=' . $file['file_id'];
}
return '#';
}
// Check if file is image
function isImage($extension) {
$image_extensions = ['jpg', 'jpeg', 'png', 'gif', 'bmp', 'webp'];
return in_array(strtolower($extension), $image_extensions);
}
// Delete file from server
function deleteFileFromServer($file_path) {
if (file_exists($file_path) && is_file($file_path)) {
return unlink($file_path);
}
return false;
}
// Get system setting
function getSetting($key, $default = null) {
global $conn;
$sql = "SELECT setting_value FROM system_settings WHERE setting_key = ?";
$stmt = $conn->prepare($sql);
$stmt->bind_param("s", $key);
$stmt->execute();
$result = $stmt->get_result();
if ($row = $result->fetch_assoc()) {
return $row['setting_value'];
}
return $default;
}
// Update system setting
function updateSetting($key, $value) {
global $conn;
$sql = "UPDATE system_settings SET setting_value = ?, updated_by = ?, updated_at = NOW() WHERE setting_key = ?";
$stmt = $conn->prepare($sql);
$stmt->bind_param("sis", $value, $_SESSION['admin_id'], $key);
return $stmt->execute();
}
// Generate CSRF token
function generateCSRFToken() {
if (!isset($_SESSION['csrf_token'])) {
$_SESSION['csrf_token'] = bin2hex(random_bytes(32));
}
return $_SESSION['csrf_token'];
}
// Verify CSRF token
function verifyCSRFToken($token) {
return isset($_SESSION['csrf_token']) && hash_equals($_SESSION['csrf_token'], $token);
}
// Clean old temp files
function cleanTempFiles($hours = 24) {
$temp_dir = TEMP_DIR;
$expiry_time = time() - ($hours * 3600);
$files = glob($temp_dir . '*');
foreach ($files as $file) {
if (is_file($file) && filemtime($file) < $expiry_time) {
unlink($file);
}
}
}
?>

4. includes/file_functions.php

<?php
require_once 'functions.php';
class FileManager {
private $conn;
private $user_id;
public function __construct($user_id) {
global $conn;
$this->conn = $conn;
$this->user_id = $user_id;
}
// Upload file
public function uploadFile($file, $folder_id = null, $description = '') {
if (!isset($file['error']) || is_array($file['error'])) {
return ['success' => false, 'message' => 'Invalid file parameters'];
}
// Check for upload errors
switch ($file['error']) {
case UPLOAD_ERR_OK:
break;
case UPLOAD_ERR_INI_SIZE:
case UPLOAD_ERR_FORM_SIZE:
return ['success' => false, 'message' => 'File too large'];
default:
return ['success' => false, 'message' => 'Unknown upload error'];
}
// Check file size
if ($file['size'] > MAX_FILE_SIZE) {
return ['success' => false, 'message' => 'File exceeds maximum size limit'];
}
// Check file extension
$original_name = $file['name'];
if (!isValidFileExtension($original_name)) {
return ['success' => false, 'message' => 'File type not allowed'];
}
// Check storage space
if (!hasEnoughStorage($this->user_id, $file['size'])) {
return ['success' => false, 'message' => 'Insufficient storage space'];
}
// Generate unique filename
$extension = pathinfo($original_name, PATHINFO_EXTENSION);
$file_name = generateUniqueFilename($original_name);
// Create user directory if not exists
$user_dir = USER_FILES_DIR . $this->user_id . '/';
if (!file_exists($user_dir)) {
mkdir($user_dir, 0755, true);
}
// Set folder path based on folder_id
if ($folder_id) {
$folder_path = $this->getFolderPath($folder_id);
$upload_dir = $user_dir . $folder_path . '/';
if (!file_exists($upload_dir)) {
mkdir($upload_dir, 0755, true);
}
} else {
$upload_dir = $user_dir;
}
$file_path = $upload_dir . $file_name;
// Move uploaded file
if (!move_uploaded_file($file['tmp_name'], $file_path)) {
return ['success' => false, 'message' => 'Failed to save file'];
}
// Get file mime type
$finfo = finfo_open(FILEINFO_MIME_TYPE);
$mime_type = finfo_file($finfo, $file_path);
finfo_close($finfo);
// Insert into database
$sql = "INSERT INTO files (user_id, folder_id, file_name, original_name, file_extension, 
file_size, file_path, mime_type) VALUES (?, ?, ?, ?, ?, ?, ?, ?)";
$stmt = $this->conn->prepare($sql);
$relative_path = 'uploads/user_files/' . $this->user_id . '/' . ($folder_path ? $folder_path . '/' : '') . $file_name;
$stmt->bind_param("iisssiss", 
$this->user_id, 
$folder_id, 
$file_name, 
$original_name, 
$extension, 
$file['size'], 
$relative_path, 
$mime_type
);
if ($stmt->execute()) {
$file_id = $this->conn->insert_id;
// Create thumbnail for images
if (isImage($extension)) {
$this->createFileThumbnail($file_id, $file_path);
}
// Update user storage used
updateUserStorageUsed($this->user_id);
// Log activity
logActivity($this->user_id, $file_id, $folder_id, 'upload');
return [
'success' => true, 
'file_id' => $file_id,
'message' => 'File uploaded successfully'
];
} else {
// Delete file if database insert fails
unlink($file_path);
return ['success' => false, 'message' => 'Database error'];
}
}
// Create folder
public function createFolder($folder_name, $parent_folder_id = null) {
$folder_name = sanitizeFilename($folder_name);
// Check if folder already exists
$sql = "SELECT folder_id FROM folders WHERE user_id = ? AND parent_folder_id " . 
($parent_folder_id ? "= ?" : "IS NULL") . " AND folder_name = ?";
$stmt = $this->conn->prepare($sql);
if ($parent_folder_id) {
$stmt->bind_param("iis", $this->user_id, $parent_folder_id, $folder_name);
} else {
$stmt->bind_param("is", $this->user_id, $folder_name);
}
$stmt->execute();
if ($stmt->get_result()->num_rows > 0) {
return ['success' => false, 'message' => 'Folder already exists'];
}
// Create folder in database
$sql = "INSERT INTO folders (user_id, parent_folder_id, folder_name) VALUES (?, ?, ?)";
$stmt = $this->conn->prepare($sql);
$stmt->bind_param("iis", $this->user_id, $parent_folder_id, $folder_name);
if ($stmt->execute()) {
$folder_id = $this->conn->insert_id;
// Create physical folder
$this->createPhysicalFolder($folder_id);
logActivity($this->user_id, null, $folder_id, 'create_folder');
return ['success' => true, 'folder_id' => $folder_id];
}
return ['success' => false, 'message' => 'Failed to create folder'];
}
// Get files in folder
public function getFiles($folder_id = null) {
$sql = "SELECT f.*, 
(SELECT COUNT(*) FROM file_versions WHERE file_id = f.file_id) as version_count 
FROM files f 
WHERE f.user_id = ? AND f.folder_id " . 
($folder_id ? "= ?" : "IS NULL") . " AND f.is_deleted = 0 
ORDER BY f.created_at DESC";
$stmt = $this->conn->prepare($sql);
if ($folder_id) {
$stmt->bind_param("ii", $this->user_id, $folder_id);
} else {
$stmt->bind_param("i", $this->user_id);
}
$stmt->execute();
return $stmt->get_result()->fetch_all(MYSQLI_ASSOC);
}
// Get folders
public function getFolders($parent_folder_id = null) {
$sql = "SELECT * FROM folders WHERE user_id = ? AND parent_folder_id " . 
($parent_folder_id ? "= ?" : "IS NULL") . " 
ORDER BY folder_name";
$stmt = $this->conn->prepare($sql);
if ($parent_folder_id) {
$stmt->bind_param("ii", $this->user_id, $parent_folder_id);
} else {
$stmt->bind_param("i", $this->user_id);
}
$stmt->execute();
return $stmt->get_result()->fetch_all(MYSQLI_ASSOC);
}
// Delete file (move to trash)
public function deleteFile($file_id) {
$sql = "UPDATE files SET is_deleted = 1, deleted_at = NOW() 
WHERE file_id = ? AND user_id = ?";
$stmt = $this->conn->prepare($sql);
$stmt->bind_param("ii", $file_id, $this->user_id);
if ($stmt->execute() && $stmt->affected_rows > 0) {
logActivity($this->user_id, $file_id, null, 'delete');
return true;
}
return false;
}
// Permanently delete file
public function permanentDeleteFile($file_id) {
// Get file info
$sql = "SELECT * FROM files WHERE file_id = ? AND user_id = ?";
$stmt = $this->conn->prepare($sql);
$stmt->bind_param("ii", $file_id, $this->user_id);
$stmt->execute();
$file = $stmt->get_result()->fetch_assoc();
if (!$file) {
return false;
}
// Delete physical file
$file_path = $_SERVER['DOCUMENT_ROOT'] . '/file-sharing-system/' . $file['file_path'];
if (file_exists($file_path)) {
unlink($file_path);
}
// Delete thumbnail
$thumbnail_path = THUMBNAIL_DIR . $file_id . '.jpg';
if (file_exists($thumbnail_path)) {
unlink($thumbnail_path);
}
// Delete from database
$sql = "DELETE FROM files WHERE file_id = ? AND user_id = ?";
$stmt = $this->conn->prepare($sql);
$stmt->bind_param("ii", $file_id, $this->user_id);
if ($stmt->execute()) {
updateUserStorageUsed($this->user_id);
return true;
}
return false;
}
// Restore file from trash
public function restoreFile($file_id) {
$sql = "UPDATE files SET is_deleted = 0, deleted_at = NULL 
WHERE file_id = ? AND user_id = ?";
$stmt = $this->conn->prepare($sql);
$stmt->bind_param("ii", $file_id, $this->user_id);
if ($stmt->execute() && $stmt->affected_rows > 0) {
logActivity($this->user_id, $file_id, null, 'restore');
return true;
}
return false;
}
// Get trash files
public function getTrashFiles() {
$sql = "SELECT * FROM files WHERE user_id = ? AND is_deleted = 1 ORDER BY deleted_at DESC";
$stmt = $this->conn->prepare($sql);
$stmt->bind_param("i", $this->user_id);
$stmt->execute();
return $stmt->get_result()->fetch_all(MYSQLI_ASSOC);
}
// Share file with user
public function shareWithUser($file_id, $shared_with_user_id, $permission = 'view') {
// Check if file belongs to user
$sql = "SELECT * FROM files WHERE file_id = ? AND user_id = ?";
$stmt = $this->conn->prepare($sql);
$stmt->bind_param("ii", $file_id, $this->user_id);
$stmt->execute();
if ($stmt->get_result()->num_rows === 0) {
return false;
}
// Check if already shared
$sql = "SELECT * FROM shared_with_users WHERE file_id = ? AND shared_with_user_id = ?";
$stmt = $this->conn->prepare($sql);
$stmt->bind_param("ii", $file_id, $shared_with_user_id);
$stmt->execute();
if ($stmt->get_result()->num_rows > 0) {
// Update existing share
$sql = "UPDATE shared_with_users SET permission = ? WHERE file_id = ? AND shared_with_user_id = ?";
$stmt = $this->conn->prepare($sql);
$stmt->bind_param("sii", $permission, $file_id, $shared_with_user_id);
} else {
// Create new share
$sql = "INSERT INTO shared_with_users (file_id, shared_with_user_id, shared_by_user_id, permission) 
VALUES (?, ?, ?, ?)";
$stmt = $this->conn->prepare($sql);
$stmt->bind_param("iiis", $file_id, $shared_with_user_id, $this->user_id, $permission);
}
if ($stmt->execute()) {
logActivity($this->user_id, $file_id, null, 'share');
return true;
}
return false;
}
// Generate share link
public function generateShareLink($file_id, $expiry_days = 7, $password = null, $allow_download = true) {
// Check if file belongs to user
$sql = "SELECT * FROM files WHERE file_id = ? AND user_id = ?";
$stmt = $this->conn->prepare($sql);
$stmt->bind_param("ii", $file_id, $this->user_id);
$stmt->execute();
if ($stmt->get_result()->num_rows === 0) {
return false;
}
$token = generateShareToken();
$expiry_date = $expiry_days ? date('Y-m-d H:i:s', strtotime("+$expiry_days days")) : null;
$hashed_password = $password ? password_hash($password, PASSWORD_DEFAULT) : null;
$sql = "INSERT INTO shared_links (file_id, share_token, share_password, expiry_date, allow_download, created_by) 
VALUES (?, ?, ?, ?, ?, ?)";
$stmt = $this->conn->prepare($sql);
$stmt->bind_param("isssii", $file_id, $token, $hashed_password, $expiry_date, $allow_download, $this->user_id);
if ($stmt->execute()) {
return SITE_URL . 'shared/?token=' . $token;
}
return false;
}
// Get shared files
public function getSharedWithMe() {
$sql = "SELECT f.*, sw.permission, u.username as shared_by_username, 
u.full_name as shared_by_name, sw.created_at as shared_at
FROM shared_with_users sw
JOIN files f ON sw.file_id = f.file_id
JOIN users u ON sw.shared_by_user_id = u.user_id
WHERE sw.shared_with_user_id = ? AND f.is_deleted = 0
ORDER BY sw.created_at DESC";
$stmt = $this->conn->prepare($sql);
$stmt->bind_param("i", $this->user_id);
$stmt->execute();
return $stmt->get_result()->fetch_all(MYSQLI_ASSOC);
}
// Helper function to create physical folder
private function createPhysicalFolder($folder_id) {
$folder_path = $this->getFolderPhysicalPath($folder_id);
if (!file_exists($folder_path)) {
mkdir($folder_path, 0755, true);
}
}
// Helper function to get folder physical path
private function getFolderPhysicalPath($folder_id) {
$path_parts = [];
$current_id = $folder_id;
while ($current_id) {
$sql = "SELECT folder_id, folder_name, parent_folder_id FROM folders WHERE folder_id = ?";
$stmt = $this->conn->prepare($sql);
$stmt->bind_param("i", $current_id);
$stmt->execute();
$result = $stmt->get_result();
if ($row = $result->fetch_assoc()) {
array_unshift($path_parts, $row['folder_name']);
$current_id = $row['parent_folder_id'];
} else {
break;
}
}
$user_dir = USER_FILES_DIR . $this->user_id . '/';
return $user_dir . implode('/', $path_parts);
}
// Helper function to get folder path for breadcrumbs
private function getFolderPath($folder_id) {
$path_parts = [];
$current_id = $folder_id;
while ($current_id) {
$sql = "SELECT folder_id, folder_name, parent_folder_id FROM folders WHERE folder_id = ?";
$stmt = $this->conn->prepare($sql);
$stmt->bind_param("i", $current_id);
$stmt->execute();
$result = $stmt->get_result();
if ($row = $result->fetch_assoc()) {
array_unshift($path_parts, $row['folder_name']);
$current_id = $row['parent_folder_id'];
} else {
break;
}
}
return implode('/', $path_parts);
}
// Helper function to create file thumbnail
private function createFileThumbnail($file_id, $file_path) {
$thumbnail_dir = THUMBNAIL_DIR;
if (!file_exists($thumbnail_dir)) {
mkdir($thumbnail_dir, 0755, true);
}
$thumbnail_path = $thumbnail_dir . $file_id . '.jpg';
createThumbnail($file_path, $thumbnail_path);
}
}
?>

5. index.php (Landing Page)

<?php
require_once 'includes/config.php';
require_once 'includes/functions.php';
// Redirect to user dashboard if logged in
if (isLoggedIn()) {
redirect('user/dashboard.php');
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title><?php echo SITE_NAME; ?> - Secure File Sharing Platform</title>
<link rel="stylesheet" href="assets/css/style.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css">
</head>
<body>
<!-- Navigation -->
<nav class="navbar">
<div class="container">
<div class="nav-brand">
<a href="index.php">
<i class="fas fa-cloud-upload-alt"></i>
<?php echo SITE_NAME; ?>
</a>
</div>
<ul class="nav-menu">
<li><a href="#features">Features</a></li>
<li><a href="#pricing">Pricing</a></li>
<li><a href="#about">About</a></li>
<li><a href="user/login.php">Login</a></li>
<li><a href="user/register.php" class="btn-register">Sign Up Free</a></li>
</ul>
</div>
</nav>
<!-- Hero Section -->
<section class="hero">
<div class="container">
<div class="hero-content">
<h1>Secure File Sharing Made Simple</h1>
<p>Upload, store, and share your files with complete security and control. 
Access your files from anywhere, anytime.</p>
<div class="hero-buttons">
<a href="user/register.php" class="btn btn-primary">Get Started Free</a>
<a href="#features" class="btn btn-secondary">Learn More</a>
</div>
<div class="hero-stats">
<div class="stat">
<span class="stat-number">1M+</span>
<span class="stat-label">Users</span>
</div>
<div class="stat">
<span class="stat-number">10M+</span>
<span class="stat-label">Files Shared</span>
</div>
<div class="stat">
<span class="stat-number">99.9%</span>
<span class="stat-label">Uptime</span>
</div>
</div>
</div>
<div class="hero-image">
<img src="assets/images/hero-illustration.svg" alt="File Sharing Illustration">
</div>
</div>
</section>
<!-- Features Section -->
<section id="features" class="features">
<div class="container">
<h2 class="section-title">Why Choose <?php echo SITE_NAME; ?>?</h2>
<div class="features-grid">
<div class="feature-card">
<i class="fas fa-shield-alt"></i>
<h3>Secure Storage</h3>
<p>Your files are encrypted and stored securely with enterprise-grade protection.</p>
</div>
<div class="feature-card">
<i class="fas fa-share-alt"></i>
<h3>Easy Sharing</h3>
<p>Share files with anyone via secure links or direct user sharing.</p>
</div>
<div class="feature-card">
<i class="fas fa-cloud-upload-alt"></i>
<h3>Large File Support</h3>
<p>Upload files up to 10GB with our premium plans.</p>
</div>
<div class="feature-card">
<i class="fas fa-clock"></i>
<h3>Version History</h3>
<p>Keep track of file changes with automatic version control.</p>
</div>
<div class="feature-card">
<i class="fas fa-mobile-alt"></i>
<h3>Mobile Access</h3>
<p>Access your files from any device with our responsive design.</p>
</div>
<div class="feature-card">
<i class="fas fa-chart-line"></i>
<h3>Analytics</h3>
<p>Track file downloads and sharing activity.</p>
</div>
</div>
</div>
</section>
<!-- How It Works -->
<section class="how-it-works">
<div class="container">
<h2 class="section-title">How It Works</h2>
<div class="steps">
<div class="step">
<div class="step-number">1</div>
<i class="fas fa-user-plus"></i>
<h3>Create Account</h3>
<p>Sign up for free and get 1GB storage instantly</p>
</div>
<div class="step">
<div class="step-number">2</div>
<i class="fas fa-upload"></i>
<h3>Upload Files</h3>
<p>Drag and drop your files or use our uploader</p>
</div>
<div class="step">
<div class="step-number">3</div>
<i class="fas fa-share"></i>
<h3>Share Securely</h3>
<p>Generate shareable links or invite specific users</p>
</div>
</div>
</div>
</section>
<!-- Pricing Section -->
<section id="pricing" class="pricing">
<div class="container">
<h2 class="section-title">Simple, Transparent Pricing</h2>
<div class="pricing-grid">
<div class="pricing-card">
<h3>Free</h3>
<div class="price">$0<span>/month</span></div>
<ul>
<li><i class="fas fa-check"></i> 1GB Storage</li>
<li><i class="fas fa-check"></i> 100MB File Size Limit</li>
<li><i class="fas fa-check"></i> Basic Sharing</li>
<li><i class="fas fa-check"></i> 30-Day Version History</li>
</ul>
<a href="user/register.php" class="btn btn-outline">Get Started</a>
</div>
<div class="pricing-card popular">
<div class="popular-badge">Most Popular</div>
<h3>Pro</h3>
<div class="price">$9.99<span>/month</span></div>
<ul>
<li><i class="fas fa-check"></i> 100GB Storage</li>
<li><i class="fas fa-check"></i> 5GB File Size Limit</li>
<li><i class="fas fa-check"></i> Advanced Sharing Options</li>
<li><i class="fas fa-check"></i> Password Protection</li>
<li><i class="fas fa-check"></i> 1-Year Version History</li>
</ul>
<a href="user/register.php?plan=pro" class="btn btn-primary">Choose Pro</a>
</div>
<div class="pricing-card">
<h3>Business</h3>
<div class="price">$29.99<span>/month</span></div>
<ul>
<li><i class="fas fa-check"></i> 1TB Storage</li>
<li><i class="fas fa-check"></i> 10GB File Size Limit</li>
<li><i class="fas fa-check"></i> Team Collaboration</li>
<li><i class="fas fa-check"></i> Advanced Analytics</li>
<li><i class="fas fa-check"></i> Unlimited Version History</li>
</ul>
<a href="user/register.php?plan=business" class="btn btn-outline">Contact Sales</a>
</div>
</div>
</div>
</section>
<!-- Testimonials -->
<section class="testimonials">
<div class="container">
<h2 class="section-title">What Our Users Say</h2>
<div class="testimonial-grid">
<div class="testimonial-card">
<div class="testimonial-content">
<i class="fas fa-quote-left"></i>
<p>Best file sharing platform I've used. The security features are top-notch!</p>
</div>
<div class="testimonial-author">
<img src="assets/images/user1.jpg" alt="User">
<div>
<h4>John Doe</h4>
<p>Small Business Owner</p>
</div>
</div>
</div>
<div class="testimonial-card">
<div class="testimonial-content">
<i class="fas fa-quote-left"></i>
<p>Perfect for team collaboration. Sharing files with colleagues is seamless.</p>
</div>
<div class="testimonial-author">
<img src="assets/images/user2.jpg" alt="User">
<div>
<h4>Jane Smith</h4>
<p>Project Manager</p>
</div>
</div>
</div>
</div>
</div>
</section>
<!-- CTA Section -->
<section class="cta">
<div class="container">
<h2>Ready to get started?</h2>
<p>Join millions of users who trust us with their files</p>
<a href="user/register.php" class="btn btn-primary btn-large">Create Free Account</a>
</div>
</section>
<!-- Footer -->
<footer class="footer">
<div class="container">
<div class="footer-content">
<div class="footer-section">
<h4><?php echo SITE_NAME; ?></h4>
<p>Secure file sharing for everyone</p>
</div>
<div class="footer-section">
<h4>Quick Links</h4>
<ul>
<li><a href="#features">Features</a></li>
<li><a href="#pricing">Pricing</a></li>
<li><a href="#about">About Us</a></li>
<li><a href="contact.php">Contact</a></li>
</ul>
</div>
<div class="footer-section">
<h4>Legal</h4>
<ul>
<li><a href="privacy.php">Privacy Policy</a></li>
<li><a href="terms.php">Terms of Service</a></li>
<li><a href="security.php">Security</a></li>
</ul>
</div>
<div class="footer-section">
<h4>Follow Us</h4>
<div class="social-links">
<a href="#"><i class="fab fa-facebook"></i></a>
<a href="#"><i class="fab fa-twitter"></i></a>
<a href="#"><i class="fab fa-linkedin"></i></a>
<a href="#"><i class="fab fa-github"></i></a>
</div>
</div>
</div>
<div class="footer-bottom">
<p>&copy; <?php echo date('Y'); ?> <?php echo SITE_NAME; ?>. All rights reserved.</p>
</div>
</div>
</footer>
<script src="assets/js/main.js"></script>
</body>
</html>

6. user/dashboard.php

<?php
require_once '../includes/config.php';
require_once '../includes/functions.php';
require_once '../includes/file_functions.php';
// Check login
if (!isLoggedIn()) {
redirect('login.php');
}
$user_id = $_SESSION['user_id'];
$fileManager = new FileManager($user_id);
// Get user info
$sql = "SELECT * FROM users WHERE user_id = ?";
$stmt = $conn->prepare($sql);
$stmt->bind_param("i", $user_id);
$stmt->execute();
$user = $stmt->get_result()->fetch_assoc();
// Get recent files
$recent_files = $fileManager->getFiles(null);
$recent_files = array_slice($recent_files, 0, 5);
// Get folders
$folders = $fileManager->getFolders(null);
// Get storage usage
$storage_used_percent = ($user['storage_used'] / $user['storage_quota']) * 100;
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Dashboard - <?php echo SITE_NAME; ?></title>
<link rel="stylesheet" href="../assets/css/style.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css">
</head>
<body>
<!-- User Navigation -->
<nav class="user-nav">
<div class="container">
<div class="nav-brand">
<a href="dashboard.php">
<i class="fas fa-cloud-upload-alt"></i>
<?php echo SITE_NAME; ?>
</a>
</div>
<div class="nav-search">
<form action="search.php" method="GET">
<input type="text" name="q" placeholder="Search files...">
<button type="submit"><i class="fas fa-search"></i></button>
</form>
</div>
<ul class="nav-menu">
<li><a href="dashboard.php" class="active"><i class="fas fa-tachometer-alt"></i> Dashboard</a></li>
<li><a href="my-files.php"><i class="fas fa-folder"></i> My Files</a></li>
<li><a href="shared-with-me.php"><i class="fas fa-share-alt"></i> Shared</a></li>
<li><a href="trash.php"><i class="fas fa-trash"></i> Trash</a></li>
<li class="dropdown">
<a href="#" class="dropdown-toggle">
<img src="<?php echo $user['avatar'] ?? '../assets/images/default-avatar.png'; ?>" alt="Avatar">
<?php echo htmlspecialchars($user['username']); ?>
</a>
<ul class="dropdown-menu">
<li><a href="profile.php"><i class="fas fa-user"></i> Profile</a></li>
<li><a href="settings.php"><i class="fas fa-cog"></i> Settings</a></li>
<li><a href="logout.php"><i class="fas fa-sign-out-alt"></i> Logout</a></li>
</ul>
</li>
</ul>
</div>
</nav>
<!-- Main Content -->
<div class="dashboard-container">
<div class="container">
<!-- Welcome Section -->
<div class="welcome-section">
<h1>Welcome back, <?php echo htmlspecialchars($user['full_name'] ?: $user['username']); ?>!</h1>
<div class="quick-actions">
<a href="upload.php" class="action-btn">
<i class="fas fa-cloud-upload-alt"></i>
Upload Files
</a>
<a href="create-folder.php" class="action-btn">
<i class="fas fa-folder-plus"></i>
New Folder
</a>
</div>
</div>
<!-- Storage Stats -->
<div class="storage-stats">
<div class="storage-info">
<h3>Storage Usage</h3>
<div class="storage-bar">
<div class="storage-progress" style="width: <?php echo $storage_used_percent; ?>%"></div>
</div>
<div class="storage-details">
<span><?php echo formatFileSize($user['storage_used']); ?> used</span>
<span>of <?php echo formatFileSize($user['storage_quota']); ?></span>
</div>
</div>
<div class="stats-grid">
<div class="stat-card">
<i class="fas fa-file"></i>
<div class="stat-info">
<span class="stat-label">Total Files</span>
<span class="stat-value"><?php echo count($recent_files); ?></span>
</div>
</div>
<div class="stat-card">
<i class="fas fa-folder"></i>
<div class="stat-info">
<span class="stat-label">Folders</span>
<span class="stat-value"><?php echo count($folders); ?></span>
</div>
</div>
<div class="stat-card">
<i class="fas fa-share-alt"></i>
<div class="stat-info">
<span class="stat-label">Shared</span>
<span class="stat-value">0</span>
</div>
</div>
</div>
</div>
<!-- Quick Access Folders -->
<div class="quick-access">
<h2>Quick Access</h2>
<div class="folders-grid">
<?php foreach ($folders as $folder): ?>
<a href="my-files.php?folder=<?php echo $folder['folder_id']; ?>" class="folder-card">
<i class="fas fa-folder"></i>
<span><?php echo htmlspecialchars($folder['folder_name']); ?></span>
</a>
<?php endforeach; ?>
<a href="my-files.php" class="folder-card view-all">
<i class="fas fa-arrow-right"></i>
<span>View All</span>
</a>
</div>
</div>
<!-- Recent Files -->
<div class="recent-files">
<div class="section-header">
<h2>Recent Files</h2>
<a href="my-files.php" class="view-all-link">View All <i class="fas fa-arrow-right"></i></a>
</div>
<div class="files-list">
<table class="files-table">
<thead>
<tr>
<th>Name</th>
<th>Size</th>
<th>Modified</th>
<th>Actions</th>
</tr>
</thead>
<tbody>
<?php foreach ($recent_files as $file): ?>
<tr>
<td>
<i class="fas <?php echo getFileIcon($file['file_extension']); ?>"></i>
<a href="file-details.php?id=<?php echo $file['file_id']; ?>">
<?php echo htmlspecialchars($file['original_name']); ?>
</a>
</td>
<td><?php echo formatFileSize($file['file_size']); ?></td>
<td><?php echo date('M d, Y', strtotime($file['updated_at'])); ?></td>
<td>
<div class="action-buttons">
<a href="download.php?id=<?php echo $file['file_id']; ?>" class="btn-icon" title="Download">
<i class="fas fa-download"></i>
</a>
<a href="share.php?id=<?php echo $file['file_id']; ?>" class="btn-icon" title="Share">
<i class="fas fa-share-alt"></i>
</a>
<a href="delete.php?id=<?php echo $file['file_id']; ?>" class="btn-icon text-danger" 
onclick="return confirm('Move to trash?')" title="Delete">
<i class="fas fa-trash"></i>
</a>
</div>
</td>
</tr>
<?php endforeach; ?>
<?php if (empty($recent_files)): ?>
<tr>
<td colspan="4" class="text-center">No files yet. <a href="upload.php">Upload your first file</a></td>
</tr>
<?php endif; ?>
</tbody>
</table>
</div>
</div>
</div>
</div>
<!-- Upload Modal -->
<div id="uploadModal" class="modal">
<div class="modal-content">
<span class="close">&times;</span>
<h2>Upload Files</h2>
<form action="../api/upload.php" method="POST" enctype="multipart/form-data" id="uploadForm">
<div class="dropzone" id="dropzone">
<i class="fas fa-cloud-upload-alt"></i>
<p>Drag & drop files here or click to browse</p>
<input type="file" name="files[]" id="fileInput" multiple style="display: none;">
</div>
<div id="fileList" class="file-list"></div>
<button type="submit" class="btn btn-primary">Upload Files</button>
</form>
</div>
</div>
<script src="../assets/js/main.js"></script>
<script src="../assets/js/upload.js"></script>
<script>
// Initialize upload modal
document.querySelector('.action-btn[href="upload.php"]').addEventListener('click', function(e) {
e.preventDefault();
document.getElementById('uploadModal').style.display = 'block';
});
// Close modal
document.querySelector('.close').addEventListener('click', function() {
document.getElementById('uploadModal').style.display = 'none';
});
</script>
</body>
</html>

7. assets/css/style.css

/* Reset and Base Styles */
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
:root {
--primary-color: #4361ee;
--secondary-color: #3f37c9;
--success-color: #4cc9f0;
--danger-color: #f72585;
--warning-color: #f8961e;
--dark-color: #1e1b4b;
--light-color: #f8f9fa;
--gray-color: #6c757d;
--border-color: #dee2e6;
--shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
--transition: all 0.3s ease;
}
body {
font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
line-height: 1.6;
color: #333;
background-color: #fafafa;
}
.container {
max-width: 1200px;
margin: 0 auto;
padding: 0 20px;
}
/* Typography */
h1, h2, h3, h4, h5, h6 {
font-weight: 600;
line-height: 1.2;
margin-bottom: 1rem;
color: var(--dark-color);
}
h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }
p {
margin-bottom: 1rem;
}
a {
color: var(--primary-color);
text-decoration: none;
transition: var(--transition);
}
a:hover {
color: var(--secondary-color);
}
/* Buttons */
.btn {
display: inline-block;
padding: 12px 24px;
border-radius: 8px;
font-weight: 500;
text-align: center;
cursor: pointer;
transition: var(--transition);
border: none;
font-size: 1rem;
}
.btn-primary {
background: var(--primary-color);
color: white;
}
.btn-primary:hover {
background: var(--secondary-color);
transform: translateY(-2px);
box-shadow: var(--shadow);
}
.btn-secondary {
background: white;
color: var(--primary-color);
border: 2px solid var(--primary-color);
}
.btn-secondary:hover {
background: var(--primary-color);
color: white;
}
.btn-danger {
background: var(--danger-color);
color: white;
}
.btn-danger:hover {
background: #d1146b;
}
.btn-large {
padding: 16px 32px;
font-size: 1.1rem;
}
.btn-small {
padding: 8px 16px;
font-size: 0.875rem;
}
/* Navigation */
.navbar {
background: white;
box-shadow: 0 2px 10px rgba(0,0,0,0.1);
position: sticky;
top: 0;
z-index: 1000;
}
.navbar .container {
display: flex;
justify-content: space-between;
align-items: center;
padding: 1rem 20px;
}
.nav-brand a {
font-size: 1.5rem;
font-weight: 700;
color: var(--primary-color);
}
.nav-brand i {
margin-right: 8px;
color: var(--primary-color);
}
.nav-menu {
display: flex;
list-style: none;
align-items: center;
gap: 2rem;
}
.nav-menu a {
color: var(--dark-color);
font-weight: 500;
}
.nav-menu a:hover,
.nav-menu a.active {
color: var(--primary-color);
}
.btn-register {
background: var(--primary-color);
color: white !important;
padding: 10px 20px;
border-radius: 8px;
}
.btn-register:hover {
background: var(--secondary-color);
}
/* Hero Section */
.hero {
background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
color: white;
padding: 100px 0;
position: relative;
overflow: hidden;
}
.hero .container {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 4rem;
align-items: center;
}
.hero-content h1 {
font-size: 3rem;
color: white;
margin-bottom: 1.5rem;
}
.hero-content p {
font-size: 1.2rem;
margin-bottom: 2rem;
opacity: 0.9;
}
.hero-buttons {
display: flex;
gap: 1rem;
margin-bottom: 3rem;
}
.hero-stats {
display: flex;
gap: 3rem;
}
.stat {
display: flex;
flex-direction: column;
}
.stat-number {
font-size: 2rem;
font-weight: 700;
}
.stat-label {
opacity: 0.8;
font-size: 0.9rem;
}
.hero-image img {
width: 100%;
animation: float 6s ease-in-out infinite;
}
@keyframes float {
0%, 100% { transform: translateY(0); }
50% { transform: translateY(-20px); }
}
/* Features Section */
.features {
padding: 80px 0;
background: white;
}
.section-title {
text-align: center;
font-size: 2.5rem;
margin-bottom: 3rem;
position: relative;
}
.section-title:after {
content: '';
display: block;
width: 80px;
height: 4px;
background: var(--primary-color);
margin: 1rem auto 0;
border-radius: 2px;
}
.features-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
gap: 2rem;
}
.feature-card {
padding: 2rem;
text-align: center;
background: white;
border-radius: 10px;
box-shadow: 0 10px 30px rgba(0,0,0,0.1);
transition: var(--transition);
}
.feature-card:hover {
transform: translateY(-5px);
box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}
.feature-card i {
font-size: 3rem;
color: var(--primary-color);
margin-bottom: 1.5rem;
}
.feature-card h3 {
margin-bottom: 1rem;
}
.feature-card p {
color: var(--gray-color);
line-height: 1.6;
}
/* How It Works */
.how-it-works {
padding: 80px 0;
background: var(--light-color);
}
.steps {
display: grid;
grid-template-columns: repeat(3, 1fr);
gap: 2rem;
max-width: 900px;
margin: 0 auto;
}
.step {
text-align: center;
position: relative;
}
.step-number {
width: 50px;
height: 50px;
background: var(--primary-color);
color: white;
border-radius: 50%;
display: flex;
align-items: center;
justify-content: center;
font-size: 1.5rem;
font-weight: bold;
margin: 0 auto 1.5rem;
}
.step i {
font-size: 2.5rem;
color: var(--primary-color);
margin-bottom: 1rem;
}
.step h3 {
margin-bottom: 0.5rem;
}
.step p {
color: var(--gray-color);
}
/* Pricing Section */
.pricing {
padding: 80px 0;
background: white;
}
.pricing-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
gap: 2rem;
max-width: 1000px;
margin: 0 auto;
}
.pricing-card {
background: white;
border-radius: 10px;
padding: 2rem;
text-align: center;
box-shadow: 0 10px 30px rgba(0,0,0,0.1);
position: relative;
transition: var(--transition);
}
.pricing-card:hover {
transform: translateY(-5px);
box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}
.pricing-card.popular {
border: 2px solid var(--primary-color);
transform: scale(1.05);
}
.popular-badge {
position: absolute;
top: -12px;
left: 50%;
transform: translateX(-50%);
background: var(--primary-color);
color: white;
padding: 4px 16px;
border-radius: 20px;
font-size: 0.875rem;
font-weight: 500;
}
.price {
font-size: 3rem;
font-weight: 700;
color: var(--dark-color);
margin: 1.5rem 0;
}
.price span {
font-size: 1rem;
color: var(--gray-color);
font-weight: normal;
}
.pricing-card ul {
list-style: none;
margin-bottom: 2rem;
text-align: left;
}
.pricing-card li {
margin-bottom: 0.75rem;
display: flex;
align-items: center;
gap: 0.5rem;
}
.pricing-card li i {
color: var(--success-color);
}
.btn-outline {
background: transparent;
color: var(--primary-color);
border: 2px solid var(--primary-color);
}
.btn-outline:hover {
background: var(--primary-color);
color: white;
}
/* Testimonials */
.testimonials {
padding: 80px 0;
background: var(--light-color);
}
.testimonial-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
gap: 2rem;
max-width: 800px;
margin: 0 auto;
}
.testimonial-card {
background: white;
border-radius: 10px;
padding: 2rem;
box-shadow: var(--shadow);
}
.testimonial-content {
margin-bottom: 1.5rem;
position: relative;
}
.testimonial-content i {
color: var(--primary-color);
font-size: 2rem;
opacity: 0.2;
position: absolute;
top: -10px;
left: -10px;
}
.testimonial-content p {
position: relative;
z-index: 1;
font-style: italic;
}
.testimonial-author {
display: flex;
align-items: center;
gap: 1rem;
}
.testimonial-author img {
width: 60px;
height: 60px;
border-radius: 50%;
object-fit: cover;
}
.testimonial-author h4 {
margin-bottom: 0.25rem;
}
.testimonial-author p {
color: var(--gray-color);
font-size: 0.875rem;
}
/* CTA Section */
.cta {
padding: 100px 0;
background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
color: white;
text-align: center;
}
.cta h2 {
font-size: 2.5rem;
color: white;
margin-bottom: 1rem;
}
.cta p {
font-size: 1.2rem;
margin-bottom: 2rem;
opacity: 0.9;
}
.cta .btn {
background: white;
color: var(--primary-color);
}
.cta .btn:hover {
background: var(--light-color);
transform: translateY(-2px);
}
/* Footer */
.footer {
background: var(--dark-color);
color: white;
padding: 4rem 0 2rem;
}
.footer-content {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
gap: 2rem;
margin-bottom: 3rem;
}
.footer-section h4 {
color: white;
margin-bottom: 1.5rem;
position: relative;
}
.footer-section h4:after {
content: '';
display: block;
width: 50px;
height: 2px;
background: var(--primary-color);
margin-top: 0.5rem;
}
.footer-section ul {
list-style: none;
}
.footer-section li {
margin-bottom: 0.75rem;
}
.footer-section a {
color: rgba(255,255,255,0.8);
transition: var(--transition);
}
.footer-section a:hover {
color: white;
padding-left: 5px;
}
.social-links {
display: flex;
gap: 1rem;
}
.social-links a {
width: 40px;
height: 40px;
background: rgba(255,255,255,0.1);
border-radius: 50%;
display: flex;
align-items: center;
justify-content: center;
transition: var(--transition);
}
.social-links a:hover {
background: var(--primary-color);
transform: translateY(-3px);
}
.footer-bottom {
text-align: center;
padding-top: 2rem;
border-top: 1px solid rgba(255,255,255,0.1);
color: rgba(255,255,255,0.6);
}
/* User Dashboard Styles */
.user-nav {
background: white;
box-shadow: 0 2px 10px rgba(0,0,0,0.1);
position: sticky;
top: 0;
z-index: 1000;
}
.user-nav .container {
display: flex;
justify-content: space-between;
align-items: center;
padding: 0.75rem 20px;
}
.nav-search {
flex: 1;
max-width: 500px;
margin: 0 2rem;
}
.nav-search form {
display: flex;
position: relative;
}
.nav-search input {
width: 100%;
padding: 10px 16px;
border: 1px solid var(--border-color);
border-radius: 8px;
font-size: 0.95rem;
transition: var(--transition);
}
.nav-search input:focus {
outline: none;
border-color: var(--primary-color);
box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
}
.nav-search button {
position: absolute;
right: 10px;
top: 50%;
transform: translateY(-50%);
background: none;
border: none;
color: var(--gray-color);
cursor: pointer;
}
.dropdown {
position: relative;
}
.dropdown-toggle {
display: flex;
align-items: center;
gap: 8px;
}
.dropdown-toggle img {
width: 32px;
height: 32px;
border-radius: 50%;
object-fit: cover;
}
.dropdown-menu {
position: absolute;
top: 100%;
right: 0;
background: white;
border-radius: 8px;
box-shadow: 0 10px 30px rgba(0,0,0,0.15);
min-width: 200px;
display: none;
z-index: 1000;
}
.dropdown:hover .dropdown-menu {
display: block;
}
.dropdown-menu li {
list-style: none;
}
.dropdown-menu a {
display: flex;
align-items: center;
gap: 10px;
padding: 12px 16px;
color: var(--dark-color);
transition: var(--transition);
}
.dropdown-menu a:hover {
background: var(--light-color);
color: var(--primary-color);
}
/* Dashboard Container */
.dashboard-container {
padding: 2rem 0;
}
.welcome-section {
display: flex;
justify-content: space-between;
align-items: center;
margin-bottom: 2rem;
}
.welcome-section h1 {
margin-bottom: 0;
}
.quick-actions {
display: flex;
gap: 1rem;
}
.action-btn {
display: flex;
align-items: center;
gap: 8px;
padding: 12px 24px;
background: var(--primary-color);
color: white;
border-radius: 8px;
transition: var(--transition);
}
.action-btn:hover {
background: var(--secondary-color);
transform: translateY(-2px);
color: white;
}
/* Storage Stats */
.storage-stats {
background: white;
border-radius: 10px;
padding: 2rem;
margin-bottom: 2rem;
box-shadow: var(--shadow);
display: grid;
grid-template-columns: 2fr 1fr;
gap: 2rem;
}
.storage-info h3 {
margin-bottom: 1rem;
}
.storage-bar {
height: 10px;
background: var(--light-color);
border-radius: 5px;
overflow: hidden;
margin-bottom: 0.5rem;
}
.storage-progress {
height: 100%;
background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
border-radius: 5px;
transition: width 0.3s ease;
}
.storage-details {
display: flex;
justify-content: space-between;
color: var(--gray-color);
font-size: 0.9rem;
}
.stats-grid {
display: grid;
grid-template-columns: repeat(3, 1fr);
gap: 1rem;
}
.stat-card {
display: flex;
align-items: center;
gap: 1rem;
padding: 1rem;
background: var(--light-color);
border-radius: 8px;
}
.stat-card i {
font-size: 2rem;
color: var(--primary-color);
}
.stat-info {
display: flex;
flex-direction: column;
}
.stat-label {
font-size: 0.875rem;
color: var(--gray-color);
}
.stat-value {
font-size: 1.5rem;
font-weight: 700;
color: var(--dark-color);
}
/* Quick Access */
.quick-access {
margin-bottom: 2rem;
}
.quick-access h2 {
margin-bottom: 1rem;
}
.folders-grid {
display: grid;
grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
gap: 1rem;
}
.folder-card {
display: flex;
flex-direction: column;
align-items: center;
padding: 1.5rem;
background: white;
border-radius: 8px;
box-shadow: var(--shadow);
transition: var(--transition);
color: var(--dark-color);
}
.folder-card:hover {
transform: translateY(-3px);
box-shadow: 0 6px 12px rgba(0,0,0,0.15);
color: var(--primary-color);
}
.folder-card i {
font-size: 2.5rem;
margin-bottom: 0.5rem;
color: var(--primary-color);
}
.folder-card.view-all {
background: var(--light-color);
}
.folder-card.view-all i {
color: var(--gray-color);
}
/* Recent Files */
.recent-files {
background: white;
border-radius: 10px;
padding: 2rem;
box-shadow: var(--shadow);
}
.section-header {
display: flex;
justify-content: space-between;
align-items: center;
margin-bottom: 1.5rem;
}
.section-header h2 {
margin-bottom: 0;
}
.view-all-link {
color: var(--primary-color);
font-weight: 500;
}
.files-table {
width: 100%;
border-collapse: collapse;
}
.files-table th {
text-align: left;
padding: 1rem;
border-bottom: 2px solid var(--border-color);
color: var(--gray-color);
font-weight: 600;
font-size: 0.9rem;
}
.files-table td {
padding: 1rem;
border-bottom: 1px solid var(--border-color);
}
.files-table tr:hover {
background: var(--light-color);
}
.files-table i {
margin-right: 10px;
color: var(--gray-color);
}
.action-buttons {
display: flex;
gap: 0.5rem;
}
.btn-icon {
width: 32px;
height: 32px;
display: flex;
align-items: center;
justify-content: center;
border-radius: 6px;
background: var(--light-color);
color: var(--gray-color);
transition: var(--transition);
}
.btn-icon:hover {
background: var(--primary-color);
color: white;
}
.btn-icon.text-danger:hover {
background: var(--danger-color);
}
.text-center {
text-align: center;
}
.text-danger {
color: var(--danger-color);
}
/* Modal */
.modal {
display: none;
position: fixed;
z-index: 2000;
left: 0;
top: 0;
width: 100%;
height: 100%;
background-color: rgba(0,0,0,0.5);
}
.modal-content {
background-color: white;
margin: 10% auto;
padding: 2rem;
border-radius: 10px;
width: 90%;
max-width: 600px;
position: relative;
animation: slideDown 0.3s ease;
}
@keyframes slideDown {
from {
transform: translateY(-30px);
opacity: 0;
}
to {
transform: translateY(0);
opacity: 1;
}
}
.close {
position: absolute;
right: 20px;
top: 15px;
font-size: 28px;
font-weight: bold;
color: var(--gray-color);
cursor: pointer;
}
.close:hover {
color: var(--danger-color);
}
/* Dropzone */
.dropzone {
border: 2px dashed var(--border-color);
border-radius: 8px;
padding: 2rem;
text-align: center;
margin: 1rem 0;
cursor: pointer;
transition: var(--transition);
}
.dropzone:hover,
.dropzone.dragover {
border-color: var(--primary-color);
background: rgba(67, 97, 238, 0.05);
}
.dropzone i {
font-size: 3rem;
color: var(--primary-color);
margin-bottom: 1rem;
}
.file-list {
margin: 1rem 0;
max-height: 200px;
overflow-y: auto;
}
.file-item {
display: flex;
align-items: center;
justify-content: space-between;
padding: 0.5rem;
background: var(--light-color);
margin-bottom: 0.5rem;
border-radius: 4px;
}
/* Responsive Design */
@media (max-width: 768px) {
h1 { font-size: 2rem; }
h2 { font-size: 1.75rem; }
.hero .container {
grid-template-columns: 1fr;
text-align: center;
}
.hero-buttons {
justify-content: center;
}
.hero-stats {
justify-content: center;
}
.steps {
grid-template-columns: 1fr;
}
.pricing-grid {
grid-template-columns: 1fr;
}
.pricing-card.popular {
transform: scale(1);
}
.storage-stats {
grid-template-columns: 1fr;
}
.stats-grid {
grid-template-columns: 1fr;
}
.user-nav .container {
flex-direction: column;
gap: 1rem;
}
.nav-search {
max-width: 100%;
margin: 0;
}
}

8. assets/js/upload.js

class FileUploader {
constructor() {
this.dropzone = document.getElementById('dropzone');
this.fileInput = document.getElementById('fileInput');
this.fileList = document.getElementById('fileList');
this.uploadForm = document.getElementById('uploadForm');
this.files = [];
this.init();
}
init() {
// Click on dropzone to open file dialog
this.dropzone.addEventListener('click', () => {
this.fileInput.click();
});
// Handle drag & drop
this.dropzone.addEventListener('dragover', (e) => {
e.preventDefault();
this.dropzone.classList.add('dragover');
});
this.dropzone.addEventListener('dragleave', () => {
this.dropzone.classList.remove('dragover');
});
this.dropzone.addEventListener('drop', (e) => {
e.preventDefault();
this.dropzone.classList.remove('dragover');
this.handleFiles(e.dataTransfer.files);
});
// Handle file input change
this.fileInput.addEventListener('change', (e) => {
this.handleFiles(e.target.files);
});
// Handle form submission
this.uploadForm.addEventListener('submit', (e) => {
e.preventDefault();
this.uploadFiles();
});
}
handleFiles(files) {
for (let file of files) {
// Check file size (10MB limit)
if (file.size > 10 * 1024 * 1024) {
this.showNotification(`File ${file.name} is too large. Max size: 10MB`, 'error');
continue;
}
// Check if file already in list
if (!this.files.find(f => f.name === file.name && f.size === file.size)) {
this.files.push(file);
}
}
this.updateFileList();
}
updateFileList() {
this.fileList.innerHTML = '';
this.files.forEach((file, index) => {
const fileItem = document.createElement('div');
fileItem.className = 'file-item';
fileItem.innerHTML = `
<div>
<i class="fas fa-file"></i>
<span>${file.name}</span>
<small>(${this.formatFileSize(file.size)})</small>
</div>
<button type="button" class="btn-icon remove-file" data-index="${index}">
<i class="fas fa-times"></i>
</button>
`;
this.fileList.appendChild(fileItem);
});
// Add remove functionality
document.querySelectorAll('.remove-file').forEach(btn => {
btn.addEventListener('click', (e) => {
const index = e.target.closest('.remove-file').dataset.index;
this.files.splice(index, 1);
this.updateFileList();
});
});
}
formatFileSize(bytes) {
if (bytes === 0) return '0 Bytes';
const k = 1024;
const sizes = ['Bytes', 'KB', 'MB', 'GB'];
const i = Math.floor(Math.log(bytes) / Math.log(k));
return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];
}
uploadFiles() {
if (this.files.length === 0) {
this.showNotification('Please select files to upload', 'warning');
return;
}
const formData = new FormData();
this.files.forEach(file => {
formData.append('files[]', file);
});
// Show loading
const submitBtn = this.uploadForm.querySelector('button[type="submit"]');
const originalText = submitBtn.textContent;
submitBtn.textContent = 'Uploading...';
submitBtn.disabled = true;
fetch('../api/upload.php', {
method: 'POST',
body: formData
})
.then(response => response.json())
.then(data => {
if (data.success) {
this.showNotification('Files uploaded successfully!', 'success');
this.files = [];
this.updateFileList();
// Refresh page after 2 seconds
setTimeout(() => {
location.reload();
}, 2000);
} else {
this.showNotification(data.message || 'Upload failed', 'error');
}
})
.catch(error => {
this.showNotification('Error uploading files', 'error');
console.error('Upload error:', error);
})
.finally(() => {
submitBtn.textContent = originalText;
submitBtn.disabled = false;
});
}
showNotification(message, type = 'info') {
const notification = document.createElement('div');
notification.className = `notification notification-${type}`;
notification.textContent = message;
notification.style.cssText = `
position: fixed;
top: 20px;
right: 20px;
padding: 15px 25px;
background: ${type === 'success' ? '#4cc9f0' : type === 'error' ? '#f72585' : '#4361ee'};
color: white;
border-radius: 8px;
z-index: 9999;
animation: slideIn 0.3s ease;
box-shadow: 0 4px 12px rgba(0,0,0,0.15);
`;
document.body.appendChild(notification);
setTimeout(() => {
notification.remove();
}, 3000);
}
}
// Initialize uploader when DOM is loaded
document.addEventListener('DOMContentLoaded', () => {
new FileUploader();
});

9. api/upload.php

<?php
require_once '../includes/config.php';
require_once '../includes/functions.php';
require_once '../includes/file_functions.php';
header('Content-Type: application/json');
// Check if user is logged in
if (!isLoggedIn()) {
echo json_encode(['success' => false, 'message' => 'Not authenticated']);
exit();
}
// Check if files were uploaded
if (empty($_FILES['files'])) {
echo json_encode(['success' => false, 'message' => 'No files uploaded']);
exit();
}
$user_id = $_SESSION['user_id'];
$fileManager = new FileManager($user_id);
$uploaded_files = [];
$errors = [];
// Handle multiple file uploads
$files = $_FILES['files'];
$file_count = count($files['name']);
for ($i = 0; $i < $file_count; $i++) {
$file = [
'name' => $files['name'][$i],
'type' => $files['type'][$i],
'tmp_name' => $files['tmp_name'][$i],
'error' => $files['error'][$i],
'size' => $files['size'][$i]
];
$result = $fileManager->uploadFile($file);
if ($result['success']) {
$uploaded_files[] = $result;
} else {
$errors[] = $result['message'];
}
}
echo json_encode([
'success' => count($uploaded_files) > 0,
'uploaded' => $uploaded_files,
'errors' => $errors,
'message' => count($uploaded_files) . ' files uploaded successfully'
]);
?>

How to Use This Project - Step by Step Guide

Step 1: System Requirements

XAMPP/WAMP/MAMP (PHP 7.4+)
MySQL 5.7+
Web browser (Chrome, Firefox, etc.)
2GB RAM minimum
500MB free disk space

Step 2: Installation

Download and Extract

   # Navigate to htdocs (XAMPP) or www (WAMP)
cd C:\xampp\htdocs\
# Create project folder
mkdir file-sharing-system
# Extract all files into this folder

Database Setup

Open phpMyAdmin (http://localhost/phpmyadmin)
Create new database: file_sharing_system
Import database/file_sharing_system.sql
Verify tables are created (users, folders, files, etc.)

Configure Project

Open includes/config.php
Update database credentials if needed:

   define('DB_HOST', 'localhost');
define('DB_USER', 'root');
define('DB_PASS', ''); // Add password if set
define('DB_NAME', 'file_sharing_system');

Set Folder Permissions

   # Create required directories
mkdir uploads
mkdir uploads/user_files
mkdir uploads/temp
mkdir uploads/thumbnails
# Set permissions (Linux/Mac)
chmod -R 755 uploads/
# Windows: Ensure write permissions for these folders

Step 3: Initial Configuration

Default Admin Account

Username: admin
Password: Admin@123
Email: [email protected]

System Settings

Login as admin
Go to Settings page
Configure:
- Maximum file size
- Allowed file types
- Default storage quota
- Site name and URL

Step 4: Testing the System

User Side Testing:

User Registration

Go to homepage
Click "Sign Up Free"
Fill registration form
Submit and verify email

User Login

Use registered credentials
Access dashboard
View storage stats

Upload Files

Click "Upload Files"
Drag & drop files or browse
Select multiple files
Click upload
Verify files appear in list

Create Folders

Click "New Folder"
Enter folder name
Verify folder created
Navigate into folder

File Management

Rename files/folders
Move files between folders
Delete files (to trash)
Restore from trash
Permanent delete

File Sharing

Select a file
Click "Share"
Choose sharing method:
- Share with specific user
- Generate public link
Set password (optional)
Set expiry date
Copy share link

Download Files

Click download icon
Verify file downloads
Check download count

Search Functionality

Use search bar
Search by filename
Filter results

Admin Side Testing:

Admin Login

Go to /admin/login.php
Use admin credentials

User Management

View all users
Add new users
Edit user details
Suspend/activate users
Delete users

File Management

View all files
Monitor storage usage
Delete inappropriate files
View file details

System Settings

Configure system parameters
Set storage quotas
Manage file types
View system logs

Reports

Generate usage reports
View statistics
Export data

Step 5: Security Configuration

.htaccess Configuration

   # Protect sensitive directories
<FilesMatch "\.(sql|log|ini)$">
Order allow,deny
Deny from all
</FilesMatch>
# Disable directory browsing
Options -Indexes

PHP Configuration

Update php.ini for larger uploads:

   upload_max_filesize = 100M
post_max_size = 100M
max_execution_time = 300

Step 6: Features in Detail

User Features:

File Upload

Multiple file upload
Progress indicator
Drag & drop support
File type validation
Size validation

Folder Management

Create nested folders
Move files between folders
Copy files
Rename folders

File Sharing

Share with specific users
Public share links
Password protection
Expiry dates
Download permissions

File Operations

Download single/multiple
Preview supported files
Version history
File comments
Star/favorite files

Storage Management

Storage usage display
Quota notifications
Clean up old files
Trash management

Search & Filter

Quick search
Advanced filters
Sort by date/size/name
File type filters

Admin Features:

User Administration

Create/Edit/Delete users
Set user roles
Manage permissions
Reset passwords

System Monitoring

Storage overview
Active users
File statistics
Bandwidth usage

Security Management

Login attempts
Activity logs
IP blocking
File scanning

Configuration

File type restrictions
Size limits
Storage quotas
Email settings

Step 7: Troubleshooting

Common Issues and Solutions:

Upload Fails

Check PHP upload limits
Verify folder permissions
Check disk space
Check file type restrictions

Login Issues

Clear browser cache
Check session configuration
Verify database connection
Check user activation status

File Not Downloading

Check file permissions
Verify file exists on server
Check .htaccess configuration
Browser cache issues

Slow Performance

Optimize database queries
Implement file caching
Use CDN for files
Compress images

Step 8: Deployment to Production

Server Requirements

PHP 7.4 or higher
MySQL 5.7 or higher
Apache/Nginx web server
SSL certificate
20GB+ storage space

Security Hardening

Enable HTTPS
Set secure file permissions
Implement rate limiting
Enable firewall
Regular backups
Update PHP and MySQL

Performance Optimization

Enable PHP opcache
Configure MySQL caching
Use Redis for sessions
Implement file compression
CDN integration

Monitoring Setup

Server monitoring
Error logging
Usage analytics
Backup monitoring
Security alerts

Step 9: Backup Strategy

Database Backup

   # Automated daily backup
mysqldump -u root -p file_sharing_system > backup_$(date +%Y%m%d).sql

File Backup

   # Backup uploads directory
tar -czf uploads_backup_$(date +%Y%m%d).tar.gz uploads/

Configuration Backup

Backup config files
Save .htaccess rules
Document settings

Step 10: Customization Options

Branding

Update logo in navigation
Change color scheme in CSS
Modify email templates
Customize error pages

Functionality

Add payment integration
Implement file preview for more types
Add social login
Create API endpoints
Mobile app development

Integration

Google Drive integration
Dropbox integration
Email notifications
Slack/webhook alerts

Security Features Implemented

Authentication & Authorization

Password hashing
Session management
CSRF protection
Role-based access control

File Security

File type validation
Virus scanning (optional)
Secure file storage
Access control per file

Data Protection

SQL injection prevention
XSS protection
Input sanitization
Secure headers

Monitoring

Activity logging
Failed login tracking
File access logs
Admin alerts

Future Enhancements

Version 2.0 Features

Real-time collaboration
File encryption
Mobile apps (iOS/Android)
Desktop sync client
Advanced search with OCR
File locking for editing
Team workspaces
API for developers

Enterprise Features

LDAP/Active Directory integration
Compliance reporting
Data loss prevention
Advanced analytics
Workflow automation
E-signature integration

Performance Improvements

Distributed storage
CDN integration
Load balancing
Database sharding
Elasticsearch integration

This comprehensive File Sharing System provides a robust foundation for a secure file management platform. The modular architecture allows for easy customization and scaling based on specific requirements. Both user and admin interfaces are intuitive and feature-rich, making it suitable for personal use, small businesses, or enterprise deployment.

FILE SHARING SYSTEM

Introduction

Project Features

User Features:

Admin Features:

Project File Structure

Database Schema (file_sharing_system.sql)

Core PHP Files

1. includes/config.php

2. includes/db_connection.php

3. includes/functions.php

4. includes/file_functions.php

5. index.php (Landing Page)

6. user/dashboard.php

7. assets/css/style.css

8. assets/js/upload.js

9. api/upload.php

How to Use This Project - Step by Step Guide

Step 1: System Requirements

Step 2: Installation

Step 3: Initial Configuration

Step 4: Testing the System

User Side Testing:

Admin Side Testing:

Step 5: Security Configuration

Step 6: Features in Detail

User Features:

Admin Features:

Step 7: Troubleshooting

Common Issues and Solutions:

Step 8: Deployment to Production

Step 9: Backup Strategy

Step 10: Customization Options

Security Features Implemented

Future Enhancements

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