Codeignitor PHP Mysql Mongo project

I have an application which has been written in php using Codeignitor as a backend. I need to have something coded for this. You will need to perform the following steps: 2. Get the table structure from MySQL table 3. Retrieve table data from Mongo table 4. Allow the user to select which columns / fields are shown from this data 5. Data is displayed on an excel like spreadsheet which reflects an excel sheet I already have (the excel sheet has some basic formulas which need to replicated) 6. User is able to make changes to the data, which automatically updates other cells based on a formula 7. Final Values from Column 1 and 2 are saved to the session data 8. Goes to a new page and shows the data from the session Overall, it is just a 1 or 2 page script which needs to be coded in a new controller in Codeignitor. Upon successful bid, I will provide the excel file.