<script>

function doDel(id) {

alert(id);

if(confirm('Confirm deletion? ')) {

                                                                                             window.location='action.php?action=del&p_id='                                                    

                                                                                                                ;

PHP in

echo "<td>

                                                                                             'p_id']})'>Delete</a>

</td>";

## Problems encountered: I am now A number like $row['p_id']=20151000 can be passed, but once $row['p_id']=qwq121, it will show that qwq121 is undefined. How to solve it?