Laravel 5 Collections: Determining If a Collection Has An Element With has

The has method is used to determine if a item exists in the collection based on a given $key. The has method returns true if the item exists and false if it does not.

#Signature

1public function has(
2    $key
3);

#Example Use

The following example demonstrates the usage of the has method:

 1use Illuminate\Support\Collection;
 2 
 3// Create a new collection instance.
 4$collection = new Collection([
 5    'first'  => 'I am first',
 6    'second' => 'I am second'
 7]);
 8 
 9// true
10$collection->has('first');
11 
12// true
13$collection->has('second');
14 
15// false
16$collection->has('third');

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