Smarty and Twig - Templates

http://twig.sensiolabs.org/

Twig is a modern template engine for PHP

• Fast: Twig compiles templates down to plain optimized PHP code. The overhead compared to regular PHP code was reduced to the very minimum.
• Secure: Twig has a sandbox mode to evaluate untrusted template code. This allows Twig to be used as a template language for applications where users may modify the template design.
• Flexible: Twig is powered by a flexible lexer and parser. This allows the developer to define its own custom tags and filters, and create its own DSL.

http://www.smarty.net/

The Smarty design was largely driven by these goals:

• clean separation of presentation from application code
• PHP backend, Smarty template frontend
• compliment PHP, not replace it
• fast development/deployment for programmers and designers
• quick and easy to maintain
• syntax easy to understand, no PHP knowledge required
• flexibility for custom development
• security: insulation from PHP
• free, open source