Update status for all fields using for condition in PHP

Explaination:

             In this above coding we have to update all fields we have to write     for($i=0;$i<sizeof($_POST['tid']);$i++)  for conditions.And we have to update the Status for the fields. 

Form:

<form method="post" name="form">
<td align="center"><?php echo $id;?><input type="hidden" name="tid[]" 

 value="<?php echo $id;?>"/></td>
<td align="center"><input type="text" name="total_bookedseats[]" 

value="<?php echo $total_bookedseats;?>" style="width:120px;"/></td>
</tr>
<?php }?>
<tr align="center"><td align="center" colspan='10'>

<input type="submit" value="Update" name="update" class="signin_butonstyle"/>

</td></tr>
</form>

PHP Update Coding:

<?php
if(isset($_POST['update'])) 
{
for($i=0;$i<sizeof($_POST['tid']);$i++) {
//POST all fields
$total_bookedseats=$_POST['total_bookedseats'][$i];
if($total_noof_seats!=0)
{
$status="Available";
}
else
{
$status="Soldout";
}
$update=mysql_query("update ticket_details SET 

ticket_type='$ticket_type',

unit_price='$unit_price',

service_charge='$service_charge',

total_noof_seats='$total_noof_seats',

total_bookedseats='$total_bookedseats' where tid= '".$_POST[tid][$i]."' ");
}
} 
?>