<table border=1>
<tr>
<td>
<!--for/ifelse start-->
for/ifelse
<table border=1>
<tr>
<?for($i=1;$i<=9;$i++){
//if($i==1){continue;} 1단 안나오게 할때사용
?>
<td>
<b><?=$i?>단</b><br>
<?for($j=1;$j<=9;$j++){?>
<?=$i?> * <?=$j?> = <?=$i*$j?><br>
<?}?>
</td>
<?if($i%3==0){?>
</tr>
<tr>
<?}?>
<?}?>
</tr>
</table>
<!--for/ifelse end-->
</td>
<td>
<!--while/case start-->
while/case
<table border=1>
<tr>
<?
$k=1;
while($k<=9){
?>
<td>
<b><?=$k?>단</b><br>
<?
$j=1;
while($j<=9){?>
<?=$k?> * <?=$j?> = <?=$k*$j?><br>
<?
$j++;
}?>
</td>
<?
switch($k){
case($k%3==0)
?>
</tr>
<tr>
<?}?>
<?
$k++;
}
?>
</tr>
</table>
<!--while/case end-->
</td>
<td>
<!--foreach/ifelse start-->
foreach/ifelse
<table border=1>
<tr>
<?
$arr_int=array('1','2','3','4','5','6','7','8','9');
foreach($arr_int as $key=>$i){
?>
<td>
<b><?=$i?>단</b><br>
<?
foreach($arr_int as $key=>$j){
?>
<?=$i?> * <?=$j?> = <?=$i*$j?><br>
<?}?>
</td>
<?if($i%3==0){?>
</tr>
<tr>
<?}?>
<?}?>
</tr>
</table>
<!--foreach/ifelse end-->
</td>
<td>
<!--dowhile/case start-->
dowhile/case
<table border=1>
<tr>
<?
$k=1;
do{
?>
<td>
<b><?=$k?>단</b><br>
<?
$j=1;
while($j<=9){?>
<?=$k?> * <?=$j?> = <?=$k*$j?><br>
<?
$j++;
}?>
</td>
<?
switch($k){
case($k%3==0)
?>
</tr>
<tr>
<?}?>
<?
$k++;
}while($k<=9);
?>
</tr>
</table>
<!--dowhile/case end-->
</td>
</tr>
</table>