計算 BMI，請輸入你的參數

<?php
	if ( isset($_REQUEST['myh']) ) {
		$myh = $_REQUEST['myh'];
		$myw = $_REQUEST['myw'];
		$mybmi = $myw / $myh / $myh * 10000; 
		$mymsg = <<<eof
	<div style="border: 1px solid gray;"> <p>你的BMI是： $mybmi</p></div>
eof;
	}
	
	<?php if (isset($mymsg)) echo $mymsg;   ?>
?>