Laravel Collection Public API: intersect

intersect($items)

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 following code example highlights the usage of the intersect method:

 1<?php
 2 
 3use Illuminate\Support\Collection;
 4 
 5// Create a new collection instance.
 6$collection = new Collection([
 7    'first', 'second', 'third'
 8]);
 9 
10// An empty collection will be returned.
11$intersected = $collection->intersect(['fourth']);
12 
13// A collection only containing the 'third' value will
14// be returned.
15$intersected = $collection->intersect(['fourth', 'third']);

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