"; print "Height:
\n"; print "Weight:
\n"; print "
"; print ""; if (strlen($weight) > 0 and strlen($height) > 0) { $bmi = $weight * 703 / ($height * $height); print "For weight=\"$weight\" and height=\"$height\""; print " your BMI is $bmi"; } elseif (empty($weight) or empty($height)) { print "Fill in the form"; } ?>