supe rglobals

For this exercise, you will be converting the todo-list.html template
you created into a PHP driven web app. Commit and push your changes to
GitHub after each step.

Change the file extension of your todo list template to .php.

Create an array from your sample todo list items in the template. Next,
use PHP to display the array items within the unordered list in your
template and test in your browser.

Reference the code you wrote in your command line todo list app to add
the ability to load todo items from a file. The items should be loaded
into an array, and then that array should be used to display the items
just as in the above steps.

Using the POST method on the form in your template, create the ability
to add todo items to the list. Each time an item is added, the todo
list file should be saved with the new item added.

Add a link next to each todo item that says "Mark Complete" and have it
send a GET request to the page that deletes the entry. Use query
strings to send the proper key back to the server, and update the todo
list file to reflect the deletion.