Develop a simple Box.net utility for reading folder structure (revised)

Develop a small web-based utility in PHP to perform the following: - Use the [login to view URL] API (requires using OAuth authentication) as documented here: [login to view URL] - Authenticate the user to a specific [login to view URL] account - Show a web page that includes a single button "Get Folder Structure" - Read the entire hierarchy of the folder structure of the account - Use the GET /folders/{folder id}/items method - Traverse the structure using the above command until the entire structure has been read - Files can be ignored - only the folder names should be gathered, along with their folder hierarchy levels - Create a text file that includes one line per folder, indented (with tab characters) to reflect the hierarchy level of the folder. Top level folders will have no tab character, 2nd level folders will have one tab character, etc. See attached image with file imported to Excel. - Download the file to the browser so the user can download it The application will need to use a Box Application in our Box account, but can initially be tested using the developer's Box account. The application will need to be hosted on our web server, but can initially be tested using the developer's own hosted PHP account. Source code should be delivered, along with any instructions necessary for installation in a standard web hosting account with PHP support.