- public static function subDate($day, $date = "", $timestampFlag = true, $format = "Y-m-d H:i:s") {
- if (empty($date)) {
- $now = time();
- } else {
- 注释: 不是时间截格式,是YYYY-mm-dd HH:ii:ss格式,将它们转换成时间戳格式
- if (!is_numeric($date)) {
- $datetime_array = explode(" ", $date);
- $date_array = explode("-", $datetime_array[0]);
- $time_array = explode(":", $datetime_array[1]);
- $now = mktime($time_array[0], $time_array[1], $time_array[2], $date_array[1], $date_array[2], $date_array[0]);
- } else {
- $now = $date;
- }
- }
- $m = $day * 24 * 60 * 60;
- $diff = $now + $m;
- if ($timestampFlag) {
- return $diff;
- } else {
- if (empty($format)) $format = "Y-m-d H:i:s";
- $oldday = date($format, $diff);
- return $oldday;
- }
- }
- //该片段来自于http://www.codesnippet.cn/detail/160120131675.html
来源: http://www.codesnippet.cn/detail/160120131675.html