Drupal / PHP Data Change Comparison Report

My client has a Drupal website with visitor / member accounts. Members can change many fields in their profile, such as address, email, facebook account link, spouse name, children's names and so on. Currently working is a PHP script that creates a report based on any changes made to any member account since the last time the report was run. It allows for download as an Excel file. The next time the report is run, it compares the changes made since the last report was created and then creates a new report. Presently, the report shows changes to about 10 fields in a member's profile. My client wants to add most of the fields that a member profile contains so that any change made to their profile will show in the exported report. Existing code for you to review is available upon request. I need the work done within two days time. Please ensure that you add the code "#yes#" to any bid that you make to prove that you have read the details above. No robo bids accepted.