Online PHP editor | output for 27P4P

<?php date_default_timezone_set('UTC'); function dateDiff($startdate, $enddate) { $first = $startdate < $enddate ? $startdate : $enddate; $second = $startdate < $enddate ? $enddate : $startdate; $inbetween = $second - $first; $firsttemp = $first; $months = 0; $days = 0; while(TRUE) { if($firsttemp + 86400 * date('t', $firsttemp) <= $second) { $months += 1; $firsttemp += 86400 * date('t', $firsttemp); } else { if($second - $firsttemp >= 86400) { $days = floor(($second - $firsttemp) / 86400); } break; } } $years = floor($months / 12); $months = $months % 12; $hours = floor($inbetween / 60 / 60 % 24); $minutes = floor($inbetween / 60 % 60); $seconds = $inbetween % 60; $dateObj = new stdClass(); $dateObj->y = $years; $dateObj->m = $months; $dateObj->d = $days; $dateObj->h = $hours; $dateObj->i = $minutes; $dateObj->s = $seconds; $dateObj->days = floor($inbetween / 86400); return $dateObj; } $str1 = "1970-01-01"; $str2 = "2009-01-01"; $tempdate1 = $str1; $n = 0; $mydate = dateDiff(strtotime($str1), strtotime($str2)); $string = "difference " . $mydate->y . " years, " . $mydate->m . " months, " . $mydate->d . " days"; echo $string; $n += 321; $tempdate1 = $str1 . " +" . $n . " sec";