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<?php
/**
* Handle data for the current customers session
*
* @class WC_Session
* @version 2.0.0
* @package WooCommerce\Abstracts
*/
declare(strict_types=1);
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
/**
* WC_Session
*/
abstract class WC_Session {
/**
* Customer ID.
*
* @var ?string $_customer_id Customer ID.
*/
protected $_customer_id; // phpcs:ignore PSR2.Classes.PropertyDeclaration.Underscore
/**
* Session Data.
*
* @var array $_data Data array.
*/
protected $_data = array(); // phpcs:ignore PSR2.Classes.PropertyDeclaration.Underscore
/**
* Dirty when the session needs saving.
*
* @var bool $_dirty When something changes
*/
protected $_dirty = false; // phpcs:ignore PSR2.Classes.PropertyDeclaration.Underscore
/**
* Init hooks and session data. Extended by child classes.
*
* @since 3.3.0
*/
public function init() {}
/**
* Cleanup session data. Extended by child classes.
*/
public function cleanup_sessions() {}
/**
* Magic get method.
*
* @param string $key Key to get.
* @return mixed
*/
public function __get( $key ) {
return $this->get( $key );
}
/**
* Magic set method.
*
* @param string $key Key to set.
* @param mixed $value Value to set.
*/
public function __set( $key, $value ) {
$this->set( $key, $value );
}
/**
* Magic isset method.
*
* @param string $key Key to check.
* @return bool
*/
public function __isset( $key ) {
return isset( $this->_data[ sanitize_key( $key ) ] );
}
/**
* Magic unset method.
*
* @param string $key Key to unset.
*/
public function __unset( $key ) {
$key = sanitize_key( $key );
if ( isset( $this->_data[ $key ] ) ) {
unset( $this->_data[ $key ] );
$this->_dirty = true;
}
}
/**
* Get a session variable.
*
* @param string $key Key to get.
* @param mixed $default_value used if the session variable isn't set.
* @return mixed value of session variable
*/
public function get( $key, $default_value = null ) {
$key = sanitize_key( $key );
return isset( $this->_data[ $key ] ) ? maybe_unserialize( $this->_data[ $key ] ) : $default_value;
}
/**
* Set a session variable.
*
* @param string $key Key to set.
* @param mixed $value Value to set.
*/
public function set( $key, $value ) {
if ( null === $value ) {
$this->__unset( $key );
return;
}
$key = sanitize_key( $key );
$serialized_original_value = $this->_data[ $key ] ?? null;
$serialized_value = maybe_serialize( $value );
if ( $serialized_original_value === $serialized_value || maybe_unserialize( $serialized_original_value ) === $value ) {
return;
}
$this->_dirty = true;
$this->_data[ $key ] = $serialized_value;
}
/**
* Get customer ID. If the session is not initialized, returns an empty string.
*
* @return string
*/
public function get_customer_id() {
return $this->_customer_id ?? '';
}
}
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