[insert_php] $worldPopulationFile = strip_tags(file_get_contents(“http://www.census.gov/popclock/rss/popclockRSS.php”)); preg_match(“/World Population Estimate: (.*) on now/”, $worldPopulationFile, $output_array); $populationOfTheWorld = $output_array[1]; echo ‘‘; [/insert_php] I’ve been going through the XKCD website …