wp_logout()

Source

File: wp-includes/pluggable.php

function wp_logout() {
		$user_id = get_current_user_id();

		wp_destroy_current_session();
		wp_clear_auth_cookie();
		wp_set_current_user( 0 );

		/**
		 * Fires after a user is logged out.
		 *
		 * @since 1.5.0
		 * @since 5.5.0 Added the `$user_id` parameter.
		 *
		 * @param int $user_id ID of the user that was logged out.
		 */
		do_action( 'wp_logout', $user_id );
	}