What are the characteristics of twig?

The characteristics of twig are: concise, templated syntax, powerful functions, providing all the functions needed to create templates, easy to learn, scalable, fully unit tested, stable enough, complete documentation, safe, error-free Tips, quick.

Characteristics of twig

Simple

Compared to Twig , using PHP syntax in templates will be particularly verbose, especially when some processing of the output is required. This situation will become more obvious:

<?php echo $var ?>
<?php echo htmlspecialchars($var, ENT_QUOTES, &#39;UTF-8&#39;) ?>

To achieve the same operation, Twig uses a more concise syntax, which is easy to It is also more readable

{{ var }}
{{ var|escape }}
{{ var|e }}         {# 变量转义（escape）的简写 #}

Template syntax

Twig provides many shortcuts for common business logic. For example, when traversing an array may be empty, you can judge like this ：

{% for user in users %}
    * {{ user.name }}
{% else %}
    No users have been found.
{% endfor %}

Powerful

Twig provides all the functions needed to create templates, such as multiple inheritance, content blocks, output automatic escaping, etc.

{% extends "layout.html" %}
{% block content %}
    Content of the page...
{% endblock %}

Easy to learn

Twig's syntax has been greatly improved and is very simple and easy to learn. Users can quickly create templates with a little learning.

Extensibility

Developers can extend their own tags, filters, and functions based on the framework provided by Twig to give Twig various simple or complex capabilities.

Unit testing

Twig has been fully unit tested and stable enough to be used in large projects without problems

Complete documentation

Twig's documentation is very complete. The usage guide and complete API documentation can be read online: https://twig.symfony.com/doc/1.x/

Safety

Escape: For security reasons, the code in the template needs to be escaped. Twig can provide automatic escaping functions at the global or code block level

{% autoescape "html" %}
    {{ var }}
    {{ var|raw }}     {# var 不转义 #}
    {{ var|escape }}  {# var 不会重复转义 #}
{% endautoescape %}

Sandbox: Twig can place any template for execution in a sandbox environment, allowing users to only access a part of the tags and filters defined by the developer device or method, thereby making the program more secure. The sandbox environment can be enabled globally or only for some templates.

{{ include('page.html', sandboxed = true) }}

Error prompt

When a syntax error occurs in the template, Twig will provide very practical information, pointing out the wrong file name and code location, providing information for development and debugging for convenience.

fast

One of the goals of Twig's founding is that as fast as possible. Achieve faster efficiency than traditional PHP code by compiling templates into optimized PHP code.

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