Laravel Collection Public API: only

only($keys)

The only method is the logical opposite of the except method. The only method is used to return all the key/value pairs in the collection where the keys in the collection are in the supplied $keys array. Internally, this method makes a call to the Illuminate\Support\Arr::only($array, $keys) helper function.

Using the same example from the except method section, we can get only the first_name and last_name of the users in a collection:

 1<?php
 2 
 3// Create a new collection.
 4$collection = collect([
 5    'first_name' => 'John',
 6    'last_name'  => 'Doe',
 7    'password'   => 'some_password'
 8]);
 9 
10// Retrieve only the first and last
11// names from the collection.
12$data = $collection->only(['first_name', 'last_name']);

After the above code has executed, the $data variable would contain a value similar to the following output:

1Collection {
2  #items: array:2 [
3    "first_name" => "John"
4    "last_name"  => "Doe"
5  ]
6}

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