How to grab object properties from database?

Question

PHP

Good day.
I’m starting to understand oop and the question arose, I don’t know how to ask Google correctly.
There is a CAR object with speed and for example model properties, but I want to dynamically create properties and get them from the database.
1. How to do it?
2. Is this approach correct in principle?

Answer 1

In general, not very correct. An object, for that and an object, that its set of properties is known in advance.
And from the point of view of productivity, as a rule, it is much cheaper to pull all the fields once than to receive them selectively.
If for self-development - google ORM, but I am against the use of this in live projects, precisely because of the speed.