PHP中时间的密码date()函数

date ( string $format , int $timestamp = ? )

"; $today = date("m.d.y"); //04.16.21 echo $today."
"; $today = date("j, n, Y");//16, 4, 2021 echo $today."
"; $today = date("Ymd");//20210416 echo $today."
"; $today = date('h-i-s, j-m-y, it is w Day z ');//02-55-37, 16-04-21, 5530 5537 5 Friam21 105 echo $today."
"; $today = date('\i\t \i\s \t\h\e jS \d\a\y.'); //it is the 16th day. echo $today."
"; $today = date("D M j G:i:s T Y");//Fri Apr 16 2:55:37 UTC 2021 echo $today."
"; $today = date('H:m:s \m \i\s\ \m\o\n\t\h'); //02:04:37 m is month echo $today."
"; $today = date("H:i:s");//02:55:37 echo $today."
"; $today = date("Y-m-d H:i:s");//2021-04-16 02:55:37 echo $today."
"; ?>

"; echo date("Y-m-d H:i:s",$datetime);//将时间戳转换为要求的日期时间格式 echo date("Y年m月d日 H点i分s秒",$datetime); ?>

输出： 03:05:33 2021-04-16 03:05:33 1618542333 2021-04-16 03:05:332021年04月16日 03点05分33秒