扩展学习之时间戳趣谈

Java

System.currentTimeMillis() / 1000 [3]

JavaScript

Math.round(new Date().getTime()/1000) getTime()返回数值的单位是毫秒

Microsoft .NET / C#

epoch = (DateTime.Now.ToUniversalTime().Ticks - 621355968000000000) / 10000000

MySQL

SELECT unix_timestamp(now())

Perl

time

PHP

time()

PostgreSQL

SELECT extract(epoch FROM now())

Golang

time.now().Unix()

Python

先 import time 然后 time.time() 返回1476929706.5320001 可以 int(time.time())

Ruby

获取Unix时间戳：Time.now 或 Time.new 显示Unix时间戳：Time.now.to_i

SQL Server

SELECT DATEDIFF(s, '1970-01-01 00:00:00', GETUTCDATE())

Unix /Linux/类UNIX/OS X

date +%s

VBScript / ASP

DateDiff("s", "01/01/1970 08:00:00", Now())

lua

os.time() 返回时间戳

FreeSWITCH

fs_cli > strepoch 或者： fs_cli > eval ${strepoch()} 或者： （在 freeswitch里面，获取linux系统的时间戳） fs_cli > system date +%s

其他操作系统 (如果Perl被安装在系统中)

命令行状态：perl -e "print time"

Java

long epoch = new java.text.SimpleDateFormat("dd/MM/yyyy HH:mm:ss").parse("01/01/1970 01:00:00");

JavaScript

var commonTime = new Date(Date.UTC(year, month - 1, day, hour, minute, second))

MySQL

SELECT unix_timestamp(time) 时间格式: YYYY-MM-DD HH:MM:SS 或 YYMMDD 或 YYYYMMDD

Perl

先 use Time::Local 然后 my $time = timelocal($sec, $min, $hour, $day, $month, $year);

PHP

mktime(hour, minute, second, day, month, year)

PostgreSQL

SELECT extract(epoch FROM date('YYYY-MM-DD HH:MM:SS'));

Python

先 import time 然后 int(time.mktime(time.strptime('YYYY-MM-DD HH:MM:SS', '%Y-%m-%d %H:%M:%S')))

Ruby

Time.local(year, month, day, hour, minute, second)

SQL Server

SELECT DATEDIFF(s, '1970-01-01 00:00:00', time)

Unix / Linux

date +%s -d"Jan 1, 1970 00:00:01"

VBScript / ASP

DateDiff("s", "01/01/1970 00:00:00", time)