Questions about PHP mySQL and HTML programming, I'm new to HTML Options

[The_Phil]

I am considering learning HTML for making a certain internet based program.
Currently I am working on a Duolingo mock for a programming site called scratch. However the "Cloud" variables are far too limited. Here's my desire:
I want to make a program where people can create accounts and not only use language courses but create they're own. This program would include the ability to upload pic and sound files to add to one's course. I was looking into storing data on severs and found that HTML can use PHP and mySQL to save data pretty cheaply. Would HTML coupled with PHP mySQL be a sufficient means of creating an interactive program like Duolingo? If not are there any other languages that are more ready for this?
Thanks!

[masonh928]

I am familiar with Duolingo and others of the sort, and yes it would be more than sufficient, although if you want flashy graphics you can implement Flash, but for the actual program, PHP, MySQL and HTML would do just fine.

As for Java, I know only the basics like making a calculator, etc.

But most people here are well versed in PHP and SQL.

~God Bless