abstract-collections.md

Abstract Collections

AbstractCollection

This is an abstract base class that you can use for your collections. It extends ArrayIterator and implements the Collection interface (and already uses the CollectionTrait) so you just need to extend it to have a proper collection class.

<?php
declare(strict_types=1);

use Kununu\Collection\AbstractCollection;

final class MyCollection extends AbstractCollection 
{
}

$collection = MyCollection::fromIterable($myData);

AbstractFilterableCollection

Using the same concept as AbstractCollection this class extends ArrayIterator and implements the FilterableCollection (and already uses the FilterableCollectionTrait).

<?php
declare(strict_types=1);

use Kununu\Collection\AbstractFilterableCollection;

final class MyCollection extends AbstractFilterableCollection
{
}

$collection = MyCollection::fromIterable($myData);

$filtered = $collection->filter($filter);
$groups = $collection->groupBy(true, $group1Filter, $group2Filter);