$h_ua = str_replace('windows ce', '', strtolower($HTTP_USER_AGENT));
if (
	strpos($h_ua, 'windows') !== false	||
	strpos($h_ua, 'linux') !== false	||
	strpos($h_ua, 'bsd') !== false		||
	strpos($h_ua, 'x11') !== false		||
	strpos($h_ua, 'unix') !== false		||
	strpos($h_ua, 'macintosh') !== false	||
	strpos($h_ua, 'macos') !== false)
{
	// it's computer - not show counter
} else {
	// it's mobile phone - show counter
	echo "your waplog counter code...";
}