arrayhelper.php

<?php
 
namespace Bitrix\Sale\Discount\Preset;
 
 
use Bitrix\Main\ArgumentException;
 
final class ArrayHelper
{
    public static function getByPath($array, $path, $defaultValue = null)
    {
        if(!is_array($array) && !$array instanceof \ArrayAccess)
        {
            throw new ArgumentException("\$array is not array or don't implement ArrayAccess");
        }
        
        $pathItems = explode('.', $path);
 
        $lastArray = $array;
        foreach($pathItems as $pathItem)
        {
            if(!is_array($lastArray) && !$lastArray instanceof \ArrayAccess)
            {
                return $defaultValue;
            }
 
            if(!isset($lastArray[$pathItem]))
            {
                return $defaultValue;
            }
 
            $lastArray = $lastArray[$pathItem];
        }
 
        return $lastArray;
    }
}