Visualizzare un valore inun campo dopo selezione record dal dropdown list

[cavicchiandrea]

<select name="product_id[]" onchange="document.getElementById('price').value=this.getAttribute("title")" class="form-control">
                        <?php
                        include("connect.php");
                            $query = "
                        SELECT *
                          FROM tbl_product ORDER BY product_desc ASC
                         ";
                            $result = mysql_query($query);
                            while ($record = mysql_fetch_array($result)) {
                            echo "
                                <option title=\"$record[qui-ci-metti-il-campo-prezzo]\" value=\"$record[product_id]\">$record[product_cod] $record[product_desc]</option>";
                            }
                        ?>
                    </select><input type="text" name="product_price[]" id="price" size="6" value="1">