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在不同的程序中获取 Unix 时间戳以及转换到普通时间的教程

如何在不同编程语言中获取现在的 Unix 时间戳?


Java

time

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())

Python

import time
time.time()

Ruby

获取: Time.now 或者 Time.new
显示: Time.now.to_i

SQL Server

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

Unix / Linux

date +%s

VBScript / ASP

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

其他操作系统

perl -e "print time"

需要 Perl 的支持


如何在不同编程语言中实现 Unix时间戳转换为普通时间?

Java

String date = new java.text.SimpleDateFormat("dd/MM/yyyy HH:mm:ss").format(new java.util.Date( Unix timestamp * 1000))

JavaScript

var unixTimestamp = new Date( Unix timestamp * 1000)
commonTime = unixTimestamp.toLocaleString()

Linux

date -d @ Unix timestamp

MySQL

from_unixtime( Unix timestamp )

Perl

my $time = Unix timestamp
my ($sec, $min, $hour, $day, $month, $year) = (localtime($time))[0,1,2,3,4,5,6]

PHP

date('r', Unix timestamp )

PostgreSQL

SELECT TIMESTAMP WITH TIME ZONE 'epoch' + Unix timestamp ) * INTERVAL '1 second';

Python

import time
time.gmtime( Unix timestamp )

Ruby

Time.at( Unix timestamp )

SQL Server

DATEADD(s, Unix timestamp , '1970-01-01 00:00:00')

VBScript / ASP

DateAdd("s", Unix timestamp , "01/01/1970 00:00:00")

其他操作系统

perl -e "print scalar(localtime( Unix timestamp ))"

需要 Perl 的支持


如何在不同编程语言中实现普通时间转换为 Unix时间戳?

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

use Time::Local
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

import time
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 )

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