This class is made by Ahmed Selim Refaat Ahmed and can be used to process files uploaded via Web forms.
It checks a given uploaded file and performs several checks before processing it like: checking the file name against a black list of banned names, check if the file already exists in a target directory, check whether the file size is not zero nor exceeds and given limit, check the MIME type against a list of accepted types, check the file name extension against a list of accepted extensions.
Then the class processes the file by moving it to a target directory. If it succeeds, the class returns an array with several details about the file.
The package can be downloaded here (3 kb).