Illuminate\Support\Collection::reverse PHP Method

    public function reverse()
    {
        return new static(array_reverse($this->items, true));
    }

 private function doInternalOrder()
 {
     if (is_null($this->orderColumn)) {
         return;
     }
     $column = $this->orderColumn[0];
     $stripOrder = $this->options['stripOrder'];
     $self = $this;
     $this->workingCollection = $this->workingCollection->sortBy(function ($row) use($column, $stripOrder, $self) {
         if ($self->getAliasMapping()) {
             $column = $self->getNameByIndex($column);
         }
         if ($stripOrder) {
             if (is_callable($stripOrder)) {
                 return $stripOrder($row, $column);
             } else {
                 return strip_tags($row[$column]);
             }
         } else {
             return $row[$column];
         }
     }, SORT_NATURAL);
     if ($this->orderDirection == BaseEngine::ORDER_DESC) {
         $this->workingCollection = $this->workingCollection->reverse();
     }
 }