Memory usage in php when passing input parameters to a method?

Question

PHP

Hello. Question for professionals.
What is better to pass to a method, an entire object or an attribute, provided that only 1 attribute is used?
For example:

public function getChildren($parent)
{
  return Page::where('parent_id', '=', $parent->id);
}

or

public function getChildren($parentId)
{
  return Page::where('parent_id', '=', $parentId);
}

Does it somehow affect the memory consumption and the speed of the script?

Answer 1

In fact, a pointer to an object is passed to the function. There won't be much difference.

Answer 2

It is better not to drive extra data in calls. Pass only the Id if it is required.
php.net/manual/en/functions.arguments.php

Answer 3

If you are using Laravel, then you should explicitly set up Relations on your models.