Laravel Collections Sorting a collection
Example
There are a several different ways of sorting a collection.
Sort()
The sort method sorts the collection:
$collection = collect([5, 3, 1, 2, 4]);
$sorted = $collection->sort();
echo $sorted->values()->all();
returns : [1, 2, 3, 4, 5]
The sort method also allows for passing in a custom callback with your own algorithm. Under the hood sort uses php's usort.
$collection = $collection->sort(function ($a, $b) {
if ($a == $b) {
return 0;
}
return ($a < $b) ? -1 : 1;
});
SortBy()
The sortBy method sorts the collection by the given key:
$collection = collect([
['name' => 'Desk', 'price' => 200],
['name' => 'Chair', 'price' => 100],
['name' => 'Bookcase', 'price' => 150],
]);
$sorted = $collection->sortBy('price');
echo $sorted->values()->all();
returns: [
['name' => 'Chair', 'price' => 100],
['name' => 'Bookcase', 'price' => 150],
['name' => 'Desk', 'price' => 200],
]
The sortBy method allows using dot notation format to access deeper key in order to sort a multi-dimensional array.
$collection = collect([
["id"=>1,"product"=>['name' => 'Desk', 'price' => 200]],
["id"=>2, "product"=>['name' => 'Chair', 'price' => 100]],
["id"=>3, "product"=>['name' => 'Bookcase', 'price' => 150]],
]);
$sorted = $collection->sortBy("product.price")->toArray();
return: [
["id"=>2, "product"=>['name' => 'Chair', 'price' => 100]],
["id"=>3, "product"=>['name' => 'Bookcase', 'price' => 150]],
["id"=>1,"product"=>['name' => 'Desk', 'price' => 200]],
]
SortByDesc()
This method has the same signature as the sortBy method, but will sort the collection in the opposite order.
