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; use Twig\Extension\AbstractExtension; use Twig\TwigFilter; use Twig\TwigFunction; class
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extends AbstractExtension { public function getFilters(): array { return [ // If your filter generates SAFE HTML, you should add a third // parameter: ['is_safe' => ['html']] // Reference: https://twig.symfony.com/doc/3.x/advanced.html#automatic-escaping new TwigFilter('filter_name', [$this, 'doSomething']), ]; } public function getFunctions(): array { return [ new TwigFunction('function_name', [$this, 'doSomething']), ]; } public function doSomething($value) { // ... } }