prefix.self::TABLE_NAME; $wpdb->insert($table_name, array( 'order_id' => $order_id, 'tracking' => $tracking, )); } public static function get_all() { global $wpdb; $table_name = $wpdb->prefix.self::TABLE_NAME; $result = $wpdb->get_results("SELECT * FROM {$table_name} ORDER BY id DESC"); return $result; } public static function get_one_by_id( $order_id ) { global $wpdb; $table_name = $wpdb->prefix.self::TABLE_NAME; $result = $wpdb->get_results("SELECT * FROM {$table_name} where order_id = {$order_id}"); if ( isset( $result[0] ) ) { return $result[0]; } return null; } }