Est. Budget: $30.00
Comment your code thoroughly.
Task 1: Using any of the below listed techniques, create a Guest Book script that stores visitor names and e-mail addresses in a text file. Include functionality that allows users to view the guest book and prevents the same user name from being entered twice. Also, include code that sorts the guest book by name and deletes duplicate entries. Techniques: manipulate array elements; declare and initialize associative arrays; iterate through an array; find and extract elements ...