Published in Laravel 5

Laravel 5 Collections: Filtering Collections Based On Value Presence With intersect

By John Koster

The intersect removes any values that are not in the provided $items array. The intersect method returns a new instance of Collection. The intersect method preserves any keys from the original collection.

The behavior of the intersect method is similar to PHP's array_intersect function.

#Signature

1public function intersect(

2    $items

3);

#Example Use

The following code example highlights the usage of the intersect method:

 1use Illuminate\Support\Collection;

 2

 3// Create a new collection instance.

 4$collection = new Collection([

 5    'first', 'second', 'third'

 6]);

 7

 8// An empty collection will be returned.

 9$intersected = $collection->intersect(['fourth']);

10

11// A collection only containing the 'third' value will

12// be returned.

13$intersected = $collection->intersect(['fourth', 'third']);

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