Build set up

Hello,  I’m new to web development. 

I’m using a template to create a website, and I’ve converted the templete to PHP to take advantage of “php includes”. I’ve set up my development environment-sass, gulp, node.js-. The problem: I’ve notice that I’m not able to get my php pages from the source folder into the build folder nor am I able to see the page in the browser.

Link to my github is below. Any help/advice you can provide would be greatly appreciated!