http://labs.uechoco.com/blog/2008/01/php111231.html遅いし冗長ですけど僕なら*気持ちの上だけでは*こう組みます． php -r '$year = 2005; $days = array(); for ($current = strtotime(sprintf("%d-01-01", $year)); intval(strftime("%Y", $current)) ==…