html php not properly aligning for each column [closed] - php

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I m trying to run two loops the first query in retrieves the column .The second query takes the primary id of the first table and executes the query.
Final result should be like given in the image
Im not able to give the proper alignment
Below is the code
<table width="100%" border="1" cellspacing="1" cellpadding="1" >
<tr>
<td>Col1</td>
<td>col2</td>
<td>col3</td>
<td>col4/td>
</tr>
<?php
$mast = mysql_query("select * from table1 where av_master_id='".$_REQUEST['id']."'");
while($res_mas= mysql_fetch_assoc($mast))
{
?>
<tr>
<td><?php echo $res_mas['col1'];?></td>
<?php
$room= mysql_query("SELECT * FROM `table2` WHERE av_room_id='".$res_mas['av_room_id']."'");
while($res_room= mysql_fetch_assoc($room))
{
?>
<td><?php echo $res_room['col2'];?></td>
<td><?php echo $res_room['col3'];?></td>
<td><?php echo $res_room['col4'];?></td>
</td>
</tr><tr>
<?php }?>
</tr>
<?php } ?>
</table>

Answer 1

This should do it:
<table width="100%" border="1" cellspacing="1" cellpadding="1" >
<tr>
<td>Col1</td>
<td>col2</td>
<td>col3</td>
<td>col4/td>
</tr>
<?php
$mast = mysql_query("select * from table1 where av_master_id='".$_REQUEST['id']."'");
while($res_mas = mysql_fetch_assoc($mast)) {
$room = mysql_query("SELECT * FROM `table2` WHERE av_room_id='".$res_mas['av_room_id']."'");
$count = 0;
while($res_room= mysql_fetch_assoc($room)) {
$count += 1;
?>
<tr>
<td><?php echo $count === 1 ? $res_mas['col1'] : "";?></td>
<td><?php echo $res_room['col2'];?></td>
<td><?php echo $res_room['col3'];?></td>
<td><?php echo $res_room['col4'];?></td>
</tr>
<?php } } ?>
</table>
(untested)