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//A empty($gender) checked radio button has a valid value of M of F			if (isset($gender))		{			$ErrorMessage = "<strong>Gender</strong> field is empty";						$gender = $_REQUEST['gender'];						if ($gender == 'M')			{				$genderMessage = '<p><b>Have a Good day, Sir!</b></p>';				return $genderMessage;			}			elseif ($gender == 'F')			{				$genderMessage = '<p><b>Have a Good Day, Maddam!</b></p>';				return $genderMessage;			}			}