Symfony version(s) affected

7.0.0

Description

Getting a field which is a oneToMany reach this part of code

https://github.com/symfony/var-exporter/blob/7.0/LazyGhostTrait.php#L112

Where is not checked with isset() if the key index exist or not properly, assuming always that it is present.

I am using PHP 8.2

How to reproduce

I have a User class with that OneToMany

#[Ignore]
#[ORM\OneToMany(mappedBy: 'followingUser', targetEntity: Follower::class, fetch: 'EXTRA_LAZY', cascade: ['persist', 'remove'], orphanRemoval: true)]
public null|Collection|array $followings = null;

Possible Solution

Check the index at least with isset()

Additional Context

No response