string toJson(int $options) Convert the object to its JSON representation

array toArray() Get the instance as an array.

static array collapse(array $array) Collapse an array of arrays

static void macro(string $name, callable $macro) Register a

void offsetSet(string $offset, mixed $value) Set the value at the given

static array add(array $array, string $key, mixed $value) Add

Collection every(int $step, int $offset)

Collection sortByDesc(callable|string $callback, int $options = SORT_REGULAR)

mixed get(mixed $key, mixed $default = null) Get an item from the collection

Collection whereIn(string $key, mixed $values, bool $strict = false)