計算 BMI，請輸入你的個人特徵

<?php	
//最上方
	include("functions.php");
	if ( isset ($_REQUEST['myh']) ){
		$myh = $_REQUEST['myh'];
		$myw = $_REQUEST['myw'];
		$mybmi = $myw / $myh / $myh * 10000 ;
		$mymsg = <<<eof
	<div><p>你的 BMI 是$mybmi </p></div>
eof;
		echo $mymsg;
	}
?>

//input內
	if (isset($myh)) echo "value='$myh'";

//最下方
	if (isset($mymsg)) echo $mymsg;