twigHow to write PHP code in Twig?

It is not possible to write PHP code directly in Twig. However, it is possible to call PHP functions from Twig templates. To do this, you need to create a custom Twig extension and register it with the Twig environment.

Example code block:

<?php

use Twig\Extension\AbstractExtension;

class MyTwigExtension extends AbstractExtension
{
    public function getFunctions()
    {
        return [
            new \Twig\TwigFunction('my_php_function', [$this, 'myPhpFunction']),
        ];
    }

    public function myPhpFunction()
    {
        return 'Hello from PHP!';
    }
}

Output of example code:

Hello from PHP!

Code explanation

1. use Twig\Extension\AbstractExtension; - This line imports the AbstractExtension class from the Twig namespace.

2. class MyTwigExtension extends AbstractExtension - This line creates a new class called MyTwigExtension which extends the AbstractExtension class.

3. public function getFunctions() - This is a method which returns an array of Twig functions.

4. new \Twig\TwigFunction('my_php_function', [$this, 'myPhpFunction']) - This line creates a new Twig function called my_php_function which calls the myPhpFunction() method.

5. public function myPhpFunction() - This is the method which is called by the my_php_function Twig function.

6. return 'Hello from PHP!'; - This line returns a string which is the output of the my_php_function Twig function.

Helpful links

• Twig Documentation
• Creating a Custom Extension

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