<?php
defined('ABSPATH') || exit;
class WC_Meta_Data implements JsonSerializable
{
protected $current_data;
protected $data;
public function __construct($meta = array())
{
$this->current_data = $meta;
$this->apply_changes();
}
public function jsonSerialize()
{
return $this->get_data();
}
public function apply_changes()
{
$this->data = $this->current_data;
}
public function __set($key, $value)
{
$this->current_data[$key] = $value;
}
public function __isset($key)
{
return array_key_exists($key, $this->current_data);
}
public function __get($key)
{
if (array_key_exists($key, $this->current_data)) {
return $this->current_data[$key];
}
return null;
}
public function get_changes()
{
$changes = array();
foreach ($this->current_data as $id => $value) {
if (!array_key_exists($id, $this->data) || $value !== $this->data[$id]) {
$changes[$id] = $value;
}
}
return $changes;
}
public function get_data()
{
return $this->data;
}
}