htmlhelper.php

См. документацию.

<?php
 
namespace Bitrix\Sale\Discount\Preset;
 
final class HtmlHelper
{
    public static function generateSelect($id, array $selectData, $value, array $params = []): string
    {
        $html = '<select name="' . $id . '" id="' . $id . '"';
        foreach ($params as $param)
        {
            $html .= ' ' . $param;
        }
        $html .= '>';
 
        foreach ($selectData as $key => $val)
        {
            $html .=
                '<option value="' . htmlspecialcharsbx($key) . '"' . ($value == $key ? ' selected' : '') . '>'
                . htmlspecialcharsex($val)
                . '</option>'
            ;
        }
        $html .= '</select>';
 
        return $html;
    }
 
    public static function generateMultipleSelect($id, array $selectData, array $values, array $params = []): string
    {
        $html = '<select multiple name="' . $id . '" id="' . $id . '"';
        foreach ($params as $param)
        {
            $html .= ' ' . $param;
        }
        $html .= '>';
 
        foreach ($selectData as $key => $val)
        {
            $html .=
                '<option value="' . htmlspecialcharsbx($key) . '"' . (in_array($key, $values) ? ' selected' : '') . '>'
                . htmlspecialcharsex($val)
                . '</option>'
            ;
        }
        $html .= '</select>';
 
        return $html;
    }
}