This is Bard. But Google Search also added AI to their searches, too.
Last time I checked it was in A/B testing and it was bad. The result previews sometimes show you what you are searching for, not what is actually there (wrong names, wrong dates, etc.).
https://w3techs.com/technologies/overview/programming_language
On the server-side PHP is used by 76.8% of all websites (a large chunk of that being WordPress). It is not going anywhere, soon. Looking at this statistics, nothing else seems to be even in the same league from a pure usage point of view.
I have yet to see a reason why it should change. Serious question: What is the disadvantage of using the tried and tested PHP8 compared to the alternatives, if you already know PHP?