File:Fresh powder held in the maze of undergrowth covering Hachey Creek in Myra-Bellvue Park.webm Twig is a template engine for the PHP programming language. It was created by Fabien Potencier and is part of the Symfony framework. Twig is designed to be fast, secure, and flexible, making it a popular choice for developers who need to separate the presentation layer from the business logic in their applications.

Features[edit | edit source]

Twig offers a variety of features that make it a powerful tool for developers:

**Template Inheritance**: Allows templates to be extended, promoting code reuse and maintainability.
**Blocks**: Define sections of templates that can be overridden by child templates.
**Filters**: Modify the output of variables within templates.
**Functions**: Perform operations and return values within templates.
**Tests**: Evaluate conditions within templates.
**Macros**: Reusable pieces of template code.
**Lexical Scoping**: Ensures variables are only accessible within the scope they are defined.

Syntax[edit | edit source]

Twig's syntax is designed to be easy to read and write. It uses double curly braces `{{ }}` for variable interpolation and `{% %}` for control structures like loops and conditionals.

Example[edit | edit source]

Here is a simple example of a Twig template:

```twig <!DOCTYPE html> {{ title }}

{{ item }}

```

In this example, `Template:Title` is used to display the value of the `title` variable, and `{% for item in items %}` is used to loop through the `items` array.

Integration[edit | edit source]

Twig can be integrated with various PHP frameworks, including Symfony, Laravel, and Slim. It can also be used as a standalone component in any PHP project.

Security[edit | edit source]

Twig is designed with security in mind. It automatically escapes variables to prevent cross-site scripting (XSS) attacks. Developers can also define custom escaping strategies to suit their needs.

Performance[edit | edit source]

Twig compiles templates down to plain optimized PHP code. This compilation process happens once, and the compiled templates are cached, resulting in high performance.