note 38069 modified in function.checkdate by vrana

@carsten: Your method to calculate the days between two dates doesn't need to be that complicated. Try this (quick 'n' dirty): <?php function diff_days($start_date, $end_date { return floor(abs(strtotime($start_date) - strtotime($end_date))/86400); } // You can use whatever days you want echo diff_days("20031013", "20040105"); // result: 84 // You can use every format strtotime supports echo diff_days("now", "-1 year"); // You can mix start and end echo diff_days("20031203", "20031201"); // result: 2 ?> --was-- @carsten: Your method to calculate the days between two dates doesn't need to be that complicated. Try this (quick 'n' dirty): function diff_days($start_date, $end_date { return floor(abs(strtotime($start_date) - strtotime($end_date))/86400); } // You can use whatever days you want echo diff_days("20031013", "20040105"); // result: 84 // You can use every format strtotime supports echo diff_days("now", "-1 year"); // You can mix start and end echo diff_days("20031203", "20031201"); // result: 2 http://php.net/manual/en/function.checkdate.php