PHP / HTML替换/模板引擎[关闭]

I was looking around on a blog hosting site where users can create their own blog. They are also in full charge of templates and can place stuff wherever possible. I wanted to recreate something like this for testing purposes, and noticed an example I want to recreate.

The code below is connected to PHP and MySQL in some way and will show 50 categories in a unordered list, on that specific blog.

<tag:categorylist limit="50">
  <ul><li>
  <a href="${CategoryLink}">${CategoryName}</a>   
  </li></ul>
</tag:categorylist>

Any idea how I should research and how I can begin recreating something like this? Any examples or engines that allows me to do something like that?

There are any template engines out there, but you can try Smarty and if you want to explore other options just check this article...http://en.wikipedia.org/wiki/Template_engine_(web) with links to other engines like Deihro, Dwoo, Chip, Templator, H2o and more...