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<?php
/*
* This file is part of Twig.
*
* (c) Fabien Potencier
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Twig\Extra\Html\HtmlAttr;
/**
* Interface for custom attribute value objects.
*
* Implement this interface to create custom conversion logic when printing out objects as attribute
* values in the `html_attr` function.
*
* @author Matthias Pigulla <mp@webfactory.de>
*/
interface AttributeValueInterface
{
/**
* Returns the string representation of the attribute value. The returned value
* will automatically be escaped for the HTML attribute context.
*
* @return string|null the attribute value as a string, or null to omit the attribute
*/
public function getValue(): ?string;
}
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