attributes.php

См. документацию.

<?php
 
namespace Bitrix\Main\Html;
 
use Bitrix\Main\Text\HtmlFilter;
use Bitrix\Main\Web\Json;

final class Attributes
{
    private array $attributes = [];

    public function set(string $name, $value): self
    {
        $this->attributes[$name] = $value;
 
        return $this;
    }

    public function setData(string $name, $value): self
    {
        $this->set('data-' . $name, $value);
 
        return $this;
    }

    public function get(string $name)
    {
        return $this->attributes[$name] ?? null;
    }

    public function remove(string $name)
    {
        try
        {
            return $this->get($name);
        }
        finally
        {
            unset($this->attributes[$name]);
        }
    }

    public function __toString()
    {
        $result = '';
 
        if (!empty($this->attributes))
        {
            $result = ' ';
            foreach ($this->attributes as $name => $value)
            {
                if (!isset($value))
                {
                    continue;
                }
 
                $escapedName = HtmlFilter::encode($name);
 
                $isDataAttribute = stripos($name, 'data-') === 0;
                if ($isDataAttribute)
                {
                    if (is_array($value))
                    {
                        $escapedValue = '(' . HtmlFilter::encode(Json::encode($value)) . ')';
                    }
                    elseif (is_bool($value))
                    {
                        $escapedValue = $value ? 'true' : 'false';
                    }
                    else
                    {
                        $escapedValue = HtmlFilter::encode((string)$value);
                    }
                }
                else
                {
                    $escapedValue = HtmlFilter::encode((string)$value);
                }
 
                $result .= $escapedName . '="' . $escapedValue . '"';
            }
 
            $result .= ' ';
        }
 
        return $result;
    }
}