How to access PHP files using HTTP over peer-to-peer network?

I connected two PCs (say PC1 and PC2) using a patch 开发者_如何学JAVAcable (Category 5E) while both of them run on Windows 7. The IP addresses for PC1 and PC2 are 192.168.1.2 and 192.168.1.3, respectively. I've successfully configured a homegroup for the two computers and there was no problem in simple file sharings.

What I should know is that, having installed WAMPServer and stored some PHP files in PC1's root directory, how could I access them from PC2? I tried typing 'http://192.168.1.2/aphpfile.php' in the PC2's browser. And, I got no expected result. The browser simply said that it could not access the page. I'm not an expert in networking. Please help me.

PS: Please, don't close this question as a duplication. I searched related questions in this site but nothing was found helpful to me.

By default, WAMP assumes you're developing locally and will not answer requests made from outside the machine. You have to click "put online" from the WAMP menu. It will configure Apache to start listening for incoming connections from outside your machine.