What's a more dynamic language to learn, PHP or JavaScript?

I think PHP, would I be wrong?

I'm not quite sure what you mean when you say 'more dynamic', but you're really comparing apples and oranges. PHP is a server-side scripting language and JavaScript is client-side.

You're asking a pretty subjective question. I wouldn't say either one of them is more dynamic. Of the two, JavaScript is definitely more expressive, while PHP has more classical structure to it. Since JavaScript only runs in the browser, it is limited by the bugs and incompatibilities of that medium. PHP, on the other hand, is only limited by version, since its environment is always the same on the server.

So if you're asking which one you should study first, the answer is, it depends. Do you want something solid that can interact with the flow of data and operate behind the scenes, and outputs HTML? PHP... Do you want something that takes HTML that has already been outputted, then makes it behave in interesting or unique ways? JavaScript...

If you don't know any server-side or client-side scripting languages, I would start with learning a server-side one because that is where all the database interactivity takes place. Javascript will let you do cool things ON a page, but PHP/ASP/.net/whatever will let you build a cool SITE.

Given the choices, PHP, because it can use files, databases, and other resources that don't exist inside the brower.

PHP, for me, is for designing a simple or abstract type of web pages. I use Javascript for complex web page programming especially when I want to add some autoexecs to my page.

If you're looking to do some really cool/nice looking client side things learn Javascript and CSS! (Look into jQuery!) If you're looking to do server side operations (working with databases, files, user input) work with PHP.

If you want to be both developer/designer and really be impressive, learn both then, when you get a chance, find another that interests you and start to learn it too! Take your time, technology changes, advances are made, by the time you master one language there will be a new version, or new way of using it.