Add an associative array in MySQL result row - PHP

I extract each row from MySQL in PHP, now I want to add an  associative array in each row.
PHP function  array_merge is used.
    public function get_salary() {
        $c = new Connection();
       $items = array("StartTerm" => 0,"EndTerm" => 1000, "sort"=>0, "EmploymentGroup"=>0 );
       while($row = $c->getArray($result)){
// add associate array $row and $items and return it to $results
            $results[] = array_merge($row, $items);    
               }   
        return $results;
     }   
part of code in models in PHP CodeIgniter