displaying values on the text field using array?

[ameth]

I'm trying to figure out how can i display the value from several text field and it will be recorded on the database. am i going to use an array?
it's a code to determine the quantity of the items listed and which of the items is to be replace that's why i used checkbox.
I hope i explained it well. Thanks.

<form name="quantity" action="page2.php" method="POST">

        <?php
            while($rows=mysql_fetch_array($select_result, MYSQL_ASSOC)){
        ?>
    <tr>
    
        <td><?php echo $rows['item_id'];?></td>
        <td><?php echo $rows['item_name'];?></td>
        <td><input type = "text" size = "5" name = "item_qty[]" value="0"></td> //Input quantity
        <td><input type="checkbox" name="checkbox[]" id="checkbox[]" value="<?php echo $rows['item_id']; ?>"></td>
    </tr>
        <?php
            }
            ?>        
    </table>


    
<br>      
 <input type="submit" value="submit" name="submit" id="submit">
 <input type="reset" value="Clear" name="rset">
<?php
            if($_POST['submit']){
            $checkbox = $_POST['checkbox'];
            $countCheck = count($_POST['checkbox']);

            for($i=0; $i<$countCheck; $i++){
            $select_id = $checkbox[$i];
            $select_query = "SELECT FROM item WHERE item_id='$select_id'";
            $select_result = mysql_query($select_query);
                }
            
            }
            
        ?>
 
 </form>