This class can be used to validate and handle files uploaded via Web forms. It can check: - If the file does not exceed a given size limit - If the file name has one of the accepted extensions - If there is a file with the same name in the target directory If the uploaded file verifies the validation rules, the class moves the file to a given directory. The class may also return the URL for a link to download the uploaded files. The code and the comments are in Italian. In Italian: Classe Upload è una classe con semplici funzioni da usare per uppare i file. Contiene le funzioni di: sovrascrivi rinomina File, estensioni consentite, dimensioni massime, restituzione link al file uppato.