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Twig Components / Methods / preg_grep

preg_grep(pattern, flags = "") is a Twig filter to perform a regular expression match and return an array of entries that match the pattern.

{% set values = [..., ..., ...] %} 
{{ values|preg_grep("/^(\d+)?\.\d+$/");

Jasny's Twig Extensions can be easily installed using Composer:

composer require jasny/twig-extensions


$twig = new Twig_Environment($loader, $options);
$twig->addExtension(new Jasny\Twig\ArrayExtension());

To use in a Symfony project register the extensions as a service:

class: Jasny\Twig\ArrayExtension
- { name: twig.extension }

Source: Jasny

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