Check box problem

[Neelima]

Hi ,

I have a problem with check box. can any body help me.
here if i select the class the sections are selecting but when i submit i need to display class and sections separate. i am able to display classes but when i want to display sections i am facing the problem. plz help me on this.....

Below is my code.....

<?php
mysql_pconnect("localhost","root","");
mysql_select_db("zftutorial");
if($_POST['submit']){
extract($_POST);
	echo "<pre>";
	echo "<BR>";
	print_r($class);
}
?>
<script type="text/javascript">
function checkall(idv,ids)
{ //alert(idv);
 var a=new Array();
 a=document.getElementsByName(ids);
 for(var i=0;i<a.length; i++){ //alert("hi");
  a[i].checked=document.getElementById(idv).checked;
 }
}
</script>
<form action="" method="post" name="frm">
<table cellpadding="0" cellspacing="5" border="0">
<?php
$sql=mysql_query("select * from m_classes order by class_id");
while($row=mysql_fetch_array($sql)){
?>
<tr><td><strong><input type="checkbox" id="<?php echo $row['class_name'];?>" name="class[]" onclick="checkall('<?php echo $row['class_name'];?>','<?php echo $row['class_name'];?>[]')" value="<?php echo $row['class_id'];?>"/><?php echo $row['class_name'];?></strong>
 <table>
 <?php
  $sql2=mysql_query("select * from  m_classes_sections where class_id='".$row['class_id']."'");
  while($row2=mysql_fetch_array($sql2)){
  ?>
 <tr><td><input type="checkbox" name="<?php echo $row['class_name'];?>[]" value="<?php echo $row['class_id'].','.$row2['section_id'];?>"/><?php echo $row2['section_name'];?></td></tr>
 <?php } ?>
 
 </table>
</td></tr>
<?php }?>
<tr><td><input type="submit" name="submit" value="submit" /></td></tr>
</table>
</form>