yandexjson.php

См. документацию.

<?php
namespace Bitrix\Seo\Engine;
 
use Bitrix\Main\Web\Json;
 
class YandexJson extends Json
{
    public static function encode($data, $options = null)
    {
        // php 5.4.0+
        if(defined('JSON_UNESCAPED_UNICODE'))
        {
            return parent::encode($data, JSON_UNESCAPED_UNICODE);
        }
        else
        {
            return static::_encode(static::convertData($data));
        }
    }
 
    protected static function _encode($data)
    {
        $str = '';
        if(is_array($data))
        {
            $assoc = array_diff_key($data,array_keys(array_keys($data)));
 
            $str .= $assoc ? '{' : '[';
 
            $first = true;
            foreach($data as $key => $value)
            {
                $str .= $first ? '' : ',';
                $str .= $assoc ? static::_quote($key).':' : '';
                $str .= static::_encode($value);
                $first = false;
            }
 
            $str .= $assoc ? '}' : ']';
        }
        elseif(is_int($data))
        {
            $str = $data;
        }
        elseif($data === null)
        {
            $str = "null";
        }
        else
        {
            $str = static::_quote($data);
        }
 
        return $str;
    }
 
    protected static function _quote($s)
    {
        return '"'.str_replace(array('\\', '"'), array('\\\\', '\"'), $s).'"';
    }
}