[XT]

Ok html for every site it is used. Php just helps it. The advantage of it is that it loads the stuff before the client gets to the site so ur gaurenteed it will be up there but the clients browser may not support it(old browsers). It is embedded into html sort of like javascript. u start it with tags and close it with tags. Use variables and such. Very easy to learn and incoperate in design so u should use it

[darwinsape]

like someone mentioned, PHP and HTML are completely different, HTML is used to create things on a screen, but PHP is much more. PHP can be used to create dynamic counters, server side includes, dynamic pages based on what browser or OS the person is using, or to store things in a database such as MySQL...the possibilities really are endless, it's a programming language that can be embedded inside a webpage (you can make a PHP script and run it on a linux box without it having anything to do with a webpage, its a language that doesnt need to be compiled).
The only trick with PHP is that is must be installed on your server, apache and other browsers can do HTML, but PHP is completely different, therefore php must be installed.
I personally use PHP for everything, even pages that dont have any PHP code (although PHP require is best for SSI) because it's easy to add sometime in the future.
~Ben

[Jso]

OH..ok..thanks guys. Also, im trying to use PHP for a template, but I cant view what is going on. What do I need to install on my computer to view it and to edit it? Thanks!

[BlazingWolf]

You need to install PHP, and then Apache. Then you will have to configure Apache for PHP. If I knew of a good guide I'd link you but I haven't found very many good ones.

[darwinsape]

the best guides i have found are in books on php and apache. I cant remember the name off the top of my head...i'll have to edit this post later and add it. I got it from a teacher of mine...a little out dated (it mentions old versions of both) but hey...with a little improvision it works.
Are you running linux or windows?
It's easiest to just upload and preview from a server however.