File Upload System

This project implements a file upload system with support for large file uploads (up to 3GB), file management (deletion, folder creation), and a simple database integration for tracking uploaded files. The system uses PHP for server-side logic and MySQL for database operations.

Features

• Large File Upload Support: Supports uploads of files up to 3GB.
• Folder Management: Create and delete folders.
• File Management: Upload, delete, and preview files.
• Database Integration: Stores file metadata (e.g., filename, original name, folder, MIME type) in a MySQL database.
• Progress Tracking: Real-time upload progress using AJAX.
• File Previews: Supports previews for images and videos.

Prerequisites

1. Web Server: Apache with PHP enabled.
2. Database: MySQL.
3. PHP Configuration: Adjust PHP settings for large uploads.

Required PHP Settings

Ensure the following PHP settings are configured in your php.ini or .htaccess file:

php_value upload_max_filesize 3072M
php_value post_max_size 3072M
php_value memory_limit 4096M
php_value max_execution_time 3600
php_value max_input_time 3600

Installation

1. Setup Database

Create a MySQL database and configure the following settings in your PHP files:

Parameter	Default Value
Host	localhost
Username	root
Password	''
Database Name	file_upload_db

Run the provided index.php file, which will create the database and files table automatically.

2. File Structure

Ensure your project has the following directory structure:

project-root/
|-- uploads/               # Directory for storing uploaded files
|-- upload.php             # Handles file uploads
|-- delete.php             # Handles file and folder deletion
|-- index.php              # Main interface and database initialization
|-- .htaccess              # PHP and Apache settings
|-- README.md              # Project documentation

3. Upload Directory Permissions

Ensure the uploads/ directory has write permissions:

chmod -R 777 uploads/

Usage

1. Run the Application

Access the application via your browser:

http://localhost/project-root/index.php

2. Create Folders

• Use the "Create New Folder" form to add new folders under the uploads/ directory.

3. Upload Files

• Select a file and target folder using the upload form.
• Upload progress will be displayed in real-time.

4. Manage Files

• Delete Files: Use the delete button next to a file.
• Delete Folders: Use the delete button for folders (deletes all contents).
• Preview Files: Images and videos can be previewed directly in the browser.

Security Considerations

1. Path Validation: The system validates all file and folder paths to prevent directory traversal attacks.
2. Input Sanitization: User inputs are sanitized using htmlspecialchars to prevent XSS attacks.
3. Database Protection: Prepared statements are used to prevent SQL injection.

Notes

• The system supports only standard file formats for preview (e.g., images and videos).
• The file size limit is 3GB but can be adjusted based on server capabilities.

Troubleshooting

• Uploads Failing: Ensure PHP and Apache settings match the recommended values.
• Database Errors: Verify your MySQL connection settings in the PHP files.
• Permission Issues: Check uploads/ directory permissions.

License

This project is licensed under the MIT License.

Acknowledgments

This system uses the following libraries and tools:

• Bootstrap: For UI styling.
• Font Awesome: For icons.
• AJAX: For real-time upload progress.