arsort

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Supported Versions: PHP 4, PHP 5, PHP 7, PHP 8
Sort an array in descending order and maintain index association
arsort(array &$array, int $flags = SORT_REGULAR): bool
    {

        $items = $this->items;



        arsort($items, $options);



        return new static($items);

    }
src/Illuminate/Collections/Collection.php
            $results[$key] = $callback($value, $key);

        }



        $descending ? arsort($results, $options)

            : asort($results, $options);
src/Illuminate/Collections/Collection.php