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<?php
namespace Underscore\Mutator;
use Underscore\Collection;
use Underscore\Mutator;
class DifferenceMutator extends Mutator
{
/**
* Finds the difference of two collections.
*
* @param Collection $collection
* @param \Iterator $values
* @return Collection
*/
public function __invoke($collection, $values)
$collection = clone $collection;
if (!is_array($values)) {
$values = iterator_to_array($values);
}
$current = $collection->getArrayCopy();
if ($this->isAssoc($current)) {
$values = array_diff_assoc($current, $values);
} else {
$values = array_diff($current, $values);
$collection->exchangeArray($values);
return $collection;
* Check if an array is associative.
* @param array $values
* @return boolean
private function isAssoc(array $values)
$keys = array_keys($values);
return $keys !== array_keys($keys);
Im0rtality /
Underscore
