How to get single column values ​​from ArrayCollection in Symfony?

Question

symfony

There is an ArrayCollection with a large number of enitities, how to get their ids. Ideally use one of the array collection methods

Answer 1

You need to call the map() method and pass in an anonymous function that takes an entity and returns its id. As a result , you will get a collection of id of these entities
https://www.doctrine-project.org/api/collections/l...
iterations take the id of the entity and work with it