Symfony/Twig filter for rendering US 10-digit phone numbers +1xxxxxxxxx as (xxx) xxx-xxxx

AppExtension.php

<?php
namespace App\Twig;

use Twig\Extension\AbstractExtension;
use Twig\TwigFilter;

class AppExtension extends AbstractExtension
{
    public function getFilters() : Array
    {
        return [ new TwigFilter('phone',[$this, 'format']) ];
    }

    public function format(string $phone) : String
    {
        return preg_replace('/^\+?1?(\d{3})(\d{3})(\d{4})$/', '($1) $2-$3', $phone);
    }
}



```

Usage in a Twig template:

{{ person.phone | phone }}