I asked because you need a form-handling script to email you the results of a form submission by a site visitor.
You build a form in Fusion by first making something a form. I normally use a Layout Region or a Table. Go to its properties and check the "Is form" checkbox.
Then click on settings and you'll see a field to enter a form action. That's where you enter the name of the script that will process the submitted form data.
Since you have PHP, you should go to http://scripts.dbmasters.net
and get FormMailer. It's easy to set up and works very well.
In the form itself, you'd use the tools available on the Forms Toolbar in Fusion to enter input fields and a submit button.