[dk5sm5luigi]

Almost guaranteed any application you write will be hackable one way or another no matter what language you write it in. Granted you should try to write it to not be.

You should consider why you need a language. Are you using dynamic content, http requests, a database, etc? If not then plain XHTML, JavaScript, and CSS might be the best way to go.

The key to choosing a language for a web app is to choose one that is best suited for what you need or what is available. Each language has pros and cons. I often use Classic ASP because I have to work with existing MS Access databases which would be much harder to use in PHP. If you are using a MySQL database then PHP or Perl are probably your best bets.

Overall I would recommend PHP, not because it isn't hackable, but because there are a lot of resources on the web to help you figure out how to do what you want to do.