By default, Microsoft Front Page doesn't recognize PHP pages. But it's simple to get it to display PHP Pages in the WYSIWYG Editor by making a few simple changes.
This is a very quick video, but it's going to show you how to make it so that FrontPage will recognize PHP pages.
Generally when FrontPage saves pages, it saves them as HTML pages or HTM pages. You can choose either HTML or HTM whatever you're used to. If you have a PHP page you're going to want to be able to edit it inside of whatever editor you're used to using. So if you're used to using Microsoft FrontPage, here's how you get it to open a PHP page.
Go to tools, and go options. Inside of options are several tabs. Choose configure editors and then inside of configure editors, if you scroll down, you'll be able to find PHP 1, PHP 2, PHP 3, PHP 4, and (whatever you have it set as right now), make sure that you go FrontPage (Open as HTML) (Default), and then if you don't have it set already, you'll have the option to make it the default. And go ahead and click OK and then you should be able to go ahead and open any PHP Page.
An example is this template, that I got from Mark Widawer of LandingPageCashMachine.
So, hope that's helpful, and hope you enjoy a great day today!