不同编程语言中获取当前时间的Unix时间戳(Unix timestamp)

如何在不同编程语言中获取现在的Unix时间戳(Unix timestamp)?
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”
如何在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))”
如何在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(yearmonth – 1, dayhour,minutesecond))
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(hourminuteseconddaymonthyear)
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(yearmonthdayhourminutesecond)
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)

来源:http://tool.chinaz.com/Tools/unixtime.aspx

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