CODE EXAMPLE FOR PHP

laravel orm latest()

latest() is a function defined in IlluminateDatabaseQueryBuilder Class. It's job is very simple. This is how it is defined.
public function latest($column = 'created_at')
{
    return $this->orderBy($column, 'desc');
} 
So, It will just orderBy with the column you provide in descending order with the default column will be created_at.