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    <h3>Editing: SessionHandler.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php

namespace Automattic\WooCommerce\StoreApi;

use Automattic\Jetpack\Constants;
use Automattic\WooCommerce\StoreApi\Utilities\JsonWebToken;
use WC_Session;

defined( 'ABSPATH' ) || exit;

/**
 * SessionHandler class
 */
final class SessionHandler extends WC_Session {
	/**
	 * Token from HTTP headers.
	 *
	 * @var string
	 */
	protected $token;

	/**
	 * Table name for session data.
	 *
	 * @var string Custom session table name
	 */
	protected $table;

	/**
	 * Expiration timestamp.
	 *
	 * @var int
	 */
	protected $session_expiration;

	/**
	 * Constructor for the session class.
	 */
	public function __construct() {
		$this-&gt;token = wc_clean( wp_unslash( $_SERVER['HTTP_CART_TOKEN'] ?? '' ) );
		$this-&gt;table = $GLOBALS['wpdb']-&gt;prefix . 'woocommerce_sessions';
	}

	/**
	 * Init hooks and session data.
	 */
	public function init() {
		$this-&gt;init_session_from_token();
		add_action( 'shutdown', array( $this, 'save_data' ), 20 );
	}

	/**
	 * Process the token header to load the correct session.
	 */
	protected function init_session_from_token() {
		$payload = JsonWebToken::get_parts( $this-&gt;token )-&gt;payload;

		$this-&gt;_customer_id       = $payload-&gt;user_id;
		$this-&gt;session_expiration = $payload-&gt;exp;
		$this-&gt;_data              = (array) $this-&gt;get_session( $this-&gt;_customer_id, array() );
	}

	/**
	 * Returns the session.
	 *
	 * @param string $customer_id Customer ID.
	 * @param mixed  $default Default session value.
	 *
	 * @return string|array|bool
	 */
	public function get_session( $customer_id, $default = false ) {
		global $wpdb;

		// This mimics behaviour from default WC_Session_Handler class. There will be no sessions retrieved while WP setup is due.
		if ( Constants::is_defined( 'WP_SETUP_CONFIG' ) ) {
			return false;
		}

		$value = $wpdb-&gt;get_var(
			$wpdb-&gt;prepare(
				&quot;SELECT session_value FROM $this-&gt;table WHERE session_key = %s&quot;, // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared
				$customer_id
			)
		);

		if ( is_null( $value ) ) {
			$value = $default;
		}

		return maybe_unserialize( $value );
	}

	/**
	 * Save data and delete user session.
	 */
	public function save_data() {
		// Dirty if something changed - prevents saving nothing new.
		if ( $this-&gt;_dirty ) {
			global $wpdb;

			$wpdb-&gt;query(
				$wpdb-&gt;prepare(
					&quot;INSERT INTO $this-&gt;table (`session_key`, `session_value`, `session_expiry`) VALUES (%s, %s, %d) ON DUPLICATE KEY UPDATE `session_value` = VALUES(`session_value`), `session_expiry` = VALUES(`session_expiry`)&quot;, // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared
					$this-&gt;_customer_id,
					maybe_serialize( $this-&gt;_data ),
					$this-&gt;session_expiration
				)
			);

			$this-&gt;_dirty = false;
		}
	}
}
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