HTMLSpecialCharsAsEntities.php

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<?php
 
declare(strict_types=1);
 
namespace ILIAS\Refinery\Encode\Transformation;
 
use ILIAS\Refinery\Transformation;
use ILIAS\Refinery\DeriveInvokeFromTransform;
use ILIAS\Refinery\DeriveApplyToFromTransform;
use ValueError;
 
class HTMLSpecialCharsAsEntities implements Transformation
{
    use DeriveInvokeFromTransform;
    use DeriveApplyToFromTransform;
 
    public function transform($from)
    {
        if (false === preg_match('//u', $from)) {
            throw new ValueError('Invalid UTF-8 string given.');
        }
        return htmlspecialchars($from, ENT_QUOTES | ENT_SUBSTITUTE, 'utf-8');
    }
}