Changing db results in model before passing

[eluser]timotheus[/eluser]
Hello, I've got an issue I could some assistance with. This is probably more a general php question.

I'm using a model for my database functionality.

Code:

class Dbmojo extends Model {


    function Dbmojo()
    {
         // Call the Model constructor
        parent::Model();
    }

    function get_headlines()
    {
        $sql = "query here";
        $sql = $this->db->query($sql);
        foreach($sql->result_array() as $row)
        {
             if(strlen($row['title'])==50)
             {
             echo "is 50!";
             $row['title']=$row['title']."...";
             }
        }
        return $sql->result_array();
    }

}

I'm getting an attribute named "title", and if it is EXACTLY 50 characters long, I want to add a "..." to the end of it before passing along. This foreach is running properly, and the "is 50!" troubleshooting echo is showing up the exact number of times it should, but it's not modifying the query results before passing it along.

Can anyone point out what I'm doing wrong? Thanks in advance.