PHP模板語言 Twig

Twig是一個靈活，快速，安全的PHP模板語言。它將模板編譯成經過優化的原始PHP代碼。Twig擁有一個Sandbox模型來檢測不可信的模板代碼。Twig由一個靈活的詞法分析器和語法分析器組成，可以讓開發人員定義自己的標簽，過濾器并創建自己的DSL。

• 快速: Twig compiles templates down to plain optimized PHP code. The overhead compared to regular PHP code was reduced to the very minimum.
• 安全: 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.
• 靈活: 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.

示例模板：

{% extends "layout.html" %}

{% block content %}
  Content of the page...
{% endblock %}

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