htmlconverter.php

См. документацию.

<?php
namespace Bitrix\Main\Text;
 
class HtmlConverter    extends Converter
{
    public function encode($text, $textType = '')
    {
        if (is_object($text))
        {
            return $text;
        }
 
        $textType = Converter::initTextType($textType);
        if ($textType === Converter::HTML)
        {
            return $text;
        }
 
        if ($text === null)
        {
            return '';
        }
 
        return HtmlFilter::encode($text);
    }
 
    public function decode($text, $textType = '')
    {
        if (is_object($text))
        {
            return $text;
        }
 
        $textType = Converter::initTextType($textType);
        if ($textType === Converter::HTML)
        {
            return $text;
        }
 
        if ($text === null)
        {
            return '';
        }
 
        return htmlspecialchars_decode($text);
    }
}