มาทดสอบกันนะครับ (อาจจะง่ายสำหรับใครบางคนแต่ก้อเอาไว้สนุกๆ)

<form action="" method="Post">
<table>
<tr><td>INPUT  : <input type="text" name="h" size="35"><input type="submit" name="submit" value="OK"></td></tr>

</table>
</form>

<?php
if(isset($submit)) { 

for($i=1;$i<=$h;$i++){
	for($j=1;$j<=$h-$i+1;$j++){echo " ";}
	for($j=1;$j<=$i;$j++){echo "*";}
	echo "*";
	for($j=$i;$j>=1;$j--){echo "*";}
	
	echo "<br>";
}
}
?>

<?php
$j = 9;
$k = 0;
$chr = "&there4;";
echo "<center>";
for($i=1;$i<=$j;$i++){
	echo $chr;
	for($l=1;$l<=$k;$l++){
	echo $chr;
	}
echo "<br>";
$k+=2;
}
echo "</center>";
?>