在表单提交中选中数组中的复选框

Question

I have a list of checkboxes created by a while loop but when the form is submitted the checkboxes are cleared. I have tried to use the unique id of the value in the record by putting it in a hidden field and then using it in an if query before marking the checkbox as checked but it does nothing

<?php 
    while($row = mysqli_fetch_array($result)){
    $posted = $row['auditID'];
?>
 <tr class="hover">
    <td width="180"><? echo $row['auditName']; ?>
       <input type="hidden" name="audit_id_confirm" value="<? echo $row['auditID'];?>">
    </td>
    <td width="33"><input type="checkbox" name="audit_selected[]"
       value="<? echo $row['auditID'];?>" 
       <?php if($_POST['audit_id_confirm'] == $posted){ echo "checked"; }?>>
    </td>  
 </tr>
<?php
    }
?>

Answer 1

I sorted it by checking id=f the id number was in the arrays that had been posted.

<?php
    $selected = $_POST['audit_selected'];

    while($row = mysqli_fetch_array($result)){
        $audit = $row['auditID'];
        if(in_array($audit, $selected)) {
               $check="checked='checked'";
        }else{
           $check = '';
        } ?>
        <tr class="hover">
            <td width="180">
                <?php echo $row['auditName'].' '.$num_audited; ?></td><td width="33">    <input type="checkbox" name="audit_selected[]" value="<?php echo $row['auditID'];?>" <?php echo $check; ?> >
            </td>  
        </tr>
    <?php }
?>