laravel-5

Collections 200
.
1 $collection = collect([1, 2, 3, 4]);
2
3 $filtered = $collection->filter(function ($item) {
4 return $item > 2;
5 });
6
7 $filtered->all();
8
9 // [3, 4]
For the inverse of filter, see the reject method.
first() {#collection-method}
The first method returns the first element in the collection that passes a given truth test:
.
1 collect([1, 2, 3, 4])->first(function ($key, $value) {
2 return $value > 2;
3 });
4
5 // 3
You may also call the first method with no arguments to get the first element in the collection. If
the collection is empty, null is returned:
.
1 collect([1, 2, 3, 4])->first();
2
3 // 1
flatten() {#collection-method}
The flatten method flattens a multi-dimensional collection into a single dimension:
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