Laravel 5: Filtering Array Elements With only

The only method can be used to retrieve a subset of the provided array. The subset of the returned array is based on the values supplied to the $key parameter.

#Signature

The signature of the only method is:

1public static function only(
2    $array,
3    $keys
4);

#Example Use

The only helper method is the logical opposite of the except method. Using the same $_POST array from the previous example, we could retrieve only a user's first name like so:

1use Illuminate\Support\Arr;
2 
3$inputData = Arr::only(
4        $_POST,
5        'first_name'
6    );

With the resulting array looking like this:

1array {
2    ["first_name"] "John"
3}

#Global array_only Helper Function

The array_only function is a shortcut to calling Arr::only. This function is declared in the global namespace.

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