สอบถามเกี่ยวกับการเขียนโค๊ด insert multiple checkbox ครับ

				  <?php
$tableSQL ="select * from drug";
$tableQUERY = mysql_db_query($dbname, $tableSQL);
$t_num=mysql_num_rows($tableQUERY );
$i=1;
while($i<=$t_num){
$tablen = mysql_fetch_array($tableQUERY);
?>
				  <tr>
                    <td>
  <div align="left">
                          <font face="MS Sans Serif" size="1" color="#000000">
                          <input name="ary_add_drug_id[]" type="checkbox" value="<?=$tablen['Drug_id']?>" />
                          <? echo"$tablen[Drug_name]"; ?> </font>                          </td>
                    <td><label>
                      <input type="text" name="textfield" />
                    </label></td>
                    <td>  <div align="left"><font face="MS Sans Serif" size="1" color="#000000">    
					
					<? if($tablen[Drug_type] == 1) {
								echo"เม็ด "; 
								}
							if($tablen[Drug_type] == 2) {
								echo"กล่อง "; 
								}	
								if($tablen[Drug_type] == 3) {
								echo"ขวด"; 
								}	
								?> 
								
								</font>                        </td>
                  </tr>
				                            <?
$i++;
} 
?>