技术支持

关于时间戳

时间戳是指格林威治时间1970年01月01日00时00分00秒(北京时间1970年01月01日08时00分00秒)起至现在的总秒数。

不同编程语言获取时间戳

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 先 import time 然后 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 date +%s

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

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"

不同编程语言中实现Unix时间戳(Unix timestamp) → 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 先 var unixTimestamp = new Date(Unix timestamp * 1000) 然后 commonTime = unixTimestamp.toLocaleString()

Linux date -d @Unix timestamp

MySQL from_unixtime(Unix timestamp)

Perl 先 my $time = Unix timestamp 然后 my ($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 先 import time 然后 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

(如果Perl被安装在系统中) 命令行状态：perl -e "print scalar(localtime(Unix timestamp))"

不同编程语言中实现普通时间 → Unix时间戳(Unix timestamp)

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)