File Collaboration Script Kinda

Programming language: PHP Database: MySql Basic Features: 1) Add / Edit / Delete / Deactivate / Activate a company 2) Add / Edit / Delete / Deactivate / Activate users from a company 3) Upload / Delete / Assign permissions to a file (to a company or to a specific user) 4) Login using sessions 5) Logged in user can only see files for the company / user / common files. 6) User can upload files (automatically accessible by company and service provider) 7) Users can leave comments on files (time/ date stamp marked) 8) Users should be able to upload large files without timeout errors. Groups: Company / Service Provider / User / Common / Admin All files should be saved to a specific folder based on the company name they are meant to be distributed to, or should be in a COMMON folder. Company Folder will be the company name with all spaces in company name stripped ie: Jacks Auto Sales JacksAutoSales And will be saved to a sub-folder under Company called: JacksAutoSales Login Info: - Company login should be able to add / remove / edit / Activate / Deactivate users under it’s company - Users are required to log in using email address and password. - Company will have a separate login id and password. GENERAL VISUAL APPEARANCE simple CSS based. -All configuration variables should be located in 1 file