Simple Secure Upload: Manage file uploads via forms with security checks

This class has the purpose of ease and secure the upload of files.

It executes several tests on the uploaded files and the upload directory to validate and secure the upload. It checks the file name extension, type, size and directory permissions.

It may also create the uploading directory structure, generate a unique random name for the uploaded file, upload multiples files, and keep track of the upload success or failure.

The class code documentation was designed to be fully compatible with phpDocumentator 1.2.2 or better.