laravel-5

Collections
• Introduction
• Creating Collections
• Available Methods
Introduction
The Illuminate\Support\Collection class provides a fluent, convenient wrapper for working with
arrays of data. For example, check out the following code. We’ll use the collect helper to create
a new collection instance from the array, run the strtoupper function on each element, and then
remove all empty elements:
.
1 $collection = collect(['taylor', 'abigail', null])->map(function ($name) {
2 return strtoupper($name);
3 })
4 ->reject(function ($name) {
5 return empty($name);
6 });
As you can see, the Collection class allows you to chain its methods to perform fluent mapping
and reducing of the underlying array. In general, every Collection method returns an entirely new
Collection instance.
Creating Collections
As mentioned above, the collect helper returns a new Illuminate\Support\Collection instance
for the given array. So, creating a collection is as simple as:
.
1 $collection = collect([1, 2, 3]);
By default, collections of Eloquent models are always returned as Collection instances; however,
feel free to use the Collection class wherever it is convenient for your application.