SimpleMachines / SMF2.1

		$size = false;

	// If this took a long time, we may never have to do it again, but then again we might...

	if (array_sum(explode(' ', microtime())) - array_sum(explode(' ', $t)) > 0.8)

		cache_put_data('url_image_size-' . md5($url), $size, 240);

	// Didn't work.

	return $size;

		$host = @gethostbyaddr($ip);

	// It took a long time, so let's cache it!

	if (array_sum(explode(' ', microtime())) - array_sum(explode(' ', $t)) > 0.5)

		cache_put_data('hostlookup-' . $ip, $host, 600);

	return $host;

}