First thing to check is what does the Apache Monitor say when you open it. Thats the little white circle with the green arrow in it pointing to the right and the red feather sticking out of it in the Task bar -- Right Click on it, and Choose Open Apache Monitor, what do you see, well you should see something like a dialog box with like a green light on the left, and right at the bottom something like Apache/2.0.63(win32)PHP/5.2.10
also, if you hover your mouse over the little green arrow in the white circle you should see a little whitish box and in it is thould say Running All Apache Services.

Now you can write a very short web page that tests whether php is ther or not, fire up the browser, we we using Dreamweaver, then open a php web page, in between the body and the closing body tag type:-


open php tag
phpinfo();
close php tag


Save the file put it to you test server, that is on your local machine. Then point your browser at 127.0.0.1/chepheren. We Created a folder inside the main public space on the web server, Thus inside Program Files/Apache Group/Apsche2/htdocs there is a folder called chephren, all the local web pages will be put in there.
Once you open the browser in the right place you ill see a list of files that are there, one of them will be the file you just created, you must have given it a name when you creared it ! just click on it once with the left mouse button a page should open and say php version 5.2.10 system windows NT CHEPHREN-594234 5.1 build 2600 and under that a load of other stuff, infact that is all the configuration of php, there is quite a lot of it. The point is that if you can see it php is working.