mysqlnd (+ mysqli etc.) - expose the gtid to PHP in the OkPacket

Description

Looks like the gtid is already being parsed, but not exposed in PHP. It would be great to just be able to access it from the OkPacket with something like packet->gtid or packet->state_changes->gtid.

why

I can use it to track what user did what gtid change to with a gtid aware cdc on mysql. This is already working on a nodejs server (using mysql2). From my PHP server, I can only track from my ORM with timestamp + table + primary-key-id instead of gtid.

The other state changes would also be helpful from PHP-land, e.g. database for limiting the number of pools I need to run in a multi-db environment, which i cant implement in PHP at all.

Comienza rastreando cómo mysqlnd analiza y expone el MySQL OkPacket a través de mysqli, centrándote en el manejo existente de paquetes y cambios de estado. Se considera terminado cuando el código PHP puede acceder al GTID del paquete y, si están expuestos, a los demás cambios de estado solicitados; verifica el comportamiento con una configuración de MySQL que produzca respuestas compatibles con GTID.