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Collection.php
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Collection.php
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<?php
declare(strict_types=1);
/**
* CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
*
* Licensed under The MIT License
* For full copyright and license information, please see the LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
* @link https://cakephp.org CakePHP(tm) Project
* @since 3.0.0
* @license https://opensource.org/licenses/mit-license.php MIT License
*/
namespace Cake\Collection;
use ArrayIterator;
use Exception;
use IteratorIterator;
/**
* A collection is an immutable list of elements with a handful of functions to
* iterate, group, transform and extract information from it.
*
* @template-extends \IteratorIterator<mixed, mixed, \Traversable<mixed>>
*/
class Collection extends IteratorIterator implements CollectionInterface
{
use CollectionTrait;
/**
* Constructor. You can provide an array or any traversable object
*
* @param iterable $items Items.
* @throws \InvalidArgumentException If passed incorrect type for items.
*/
public function __construct(iterable $items)
{
if (is_array($items)) {
$items = new ArrayIterator($items);
}
parent::__construct($items);
}
/**
* Returns an array for serializing this of this object.
*
* @return array
*/
public function __serialize(): array
{
return $this->buffered()->toArray();
}
/**
* Rebuilds the Collection instance.
*
* @param array $data Data array.
* @return void
*/
public function __unserialize(array $data): void
{
$this->__construct($data);
}
/**
* Returns an array that can be used to describe the internal state of this
* object.
*
* @return array<string, mixed>
*/
public function __debugInfo(): array
{
try {
$count = $this->count();
} catch (Exception $e) {
$count = 'An exception occurred while getting count';
}
return [
'count' => $count,
];
}
}