doctrine: QueryBuilder vs createQuery?

Question

In Doctrine you can create DQL in 2 ways:

EntityManager::createQuery:

$query = $em->createQuery(\'SELECT u FROM MyProject\\Model\         


        

Answer 1

The main difference is the overhead of calling the methods. Your first code sample (createQuery) just for simplicity makes one method call, while the the queryBuilder makes 4. At the end of everything, they come down to a string that has to be executed, first example you are giving it the string, and the other you are building it with multiple chained method calls.

If you are looking for a reason to use one over the other, that is a question of style, and what looks more readable. For me, I like the queryBuider most of the time, it provides well defined sections for the query. Also, in the past it makes it easier to add in conditional logic when you need it.