sessionlocalstorage.php

См. документацию.

<?php
namespace Bitrix\Main\Data\LocalStorage;
 
final class SessionLocalStorage implements \ArrayAccess, \Countable, \IteratorAggregate
{
    private array $data = [];
    private string $uniqueName;
    private string $name;
 
    public function __construct(string $uniqueName, string $name)
    {
        $this->uniqueName = $uniqueName;
        $this->name = $name;
    }

    public function getUniqueName(): string
    {
        return $this->uniqueName;
    }

    public function getName(): string
    {
        return $this->name;
    }

    public function setUniqueName(string $uniqueName): self
    {
        $this->uniqueName = $uniqueName;
 
        return $this;
    }

    public function getData(): array
    {
        return $this->data;
    }

    public function setData(array $data)
    {
        $this->data = $data;
 
        return $this;
    }
 
    public function &get($key)
    {
        return $this->data[$key];
    }
 
    public function set($key, $value): self
    {
        $this->data[$key] = $value;
 
        return $this;
    }
 
    public function clear(): void
    {
        $this->data = [];
    }
 
    public function offsetExists($offset): bool
    {
        return isset($this->data[$offset]);
    }
 
    #[\ReturnTypeWillChange]
    public function &offsetGet($offset)
    {
        return $this->get($offset);
    }
 
    public function offsetSet($offset, $value): void
    {
        if ($offset === null)
        {
            $this->data[] = $value;
        }
        else
        {
            $this->data[$offset] = $value;
        }
    }
 
    public function offsetUnset($offset): void
    {
        unset($this->data[$offset]);
    }
 
    public function count(): int
    {
        return count($this->data);
    }
 
    public function getIterator(): \ArrayIterator
    {
        return new \ArrayIterator($this->getData());
    }
}