get_available_post_types(); // Handle messages. $message = ''; $message_type = 'error'; // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Reading GET parameter to display error message if ( isset( $_GET['error'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Reading GET parameter to display error message $message = sanitize_text_field( wp_unslash( $_GET['error'] ) ); } ?>