PHP Method chaining Confusion

Question

i have been lately introduced to method chaining, and am not sure if what I\'m doing here is illegal, or I\'m doing it wrong. I have a database Class like:

    c         


        

Answer 1

In query(), you need to return $this otherwise there's nothing to chain it with when the function returns

public function query($query)
{
   $this->last_query = $query;
   $this->resultset = mysql_query($query, $this->connection);
   return $this;  // <- here
}