計算 BMI，請輸入你的個人特徵

<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;
	}
	
	if (isset($myh)) echo "value='$myh'"; 
	if (isset($myw)) echo "value='$myw'"; 
	if (isset($mymsg)) echo $mymsg;
?>