Connecting HTML from to PHP

I created a HTML form and connect the file to PHP for retrieving the data. Although both files are on the same directory but when I open the HTML file (copy and past the file address on the Firefox or IE) after getting the info, my PHP doesn’t read the info and just giving me the variable name instead of correct entered info (like: Hello $userName) Although my codes are correct in both PHP and HTML ( I copy and past a code from a book to test it.) but no response. This makes me crazy that why it doesn’t work. I even tried to copy HTML and PHP on my hdoc for XMAPP but no luck. The same thing I tested on phpdesigner 7 but no response. Even I opened the book CD to read the file but nothing work!
Please help me!

Thanks,
Sara

Re : Connecting HTML from to PHP

PLs use WAMP server