推荐一款很实用的时间戳转换在线工具，可以将Unix时间戳转换转成北京时间的在线工具，同时提供各种不同语言获取时间戳的代码。
http://tool.phpthinking.com/convert/unixTimestamp
截图示例：
Unix时间戳（Unix timestamp）是一种时间表示方法，定义为从格林威治时间1970年01月01日00时00分00秒起至现在的总秒数。
1.各种编程语言获取当前Unix时间戳方法：JavatimeJavaScriptMath.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) / 10000000MySQLSELECT unix_timestamp(now())PerltimePHPtime()PostgreSQLSELECT 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_iSQL ServerSELECT DATEDIFF(s, ‘1970-01-01 00:00:00’, GETUTCDATE())Unix / Linuxdate %sVBScript / ASPDateDiff(“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”2.各种编程语言中实现Unix时间戳转化为普通时间方法：JavaString 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()Linuxdate -d @Unix timestampMySQLfrom_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]PHPdate(‘r’,Unix timestamp)PostgreSQLSELECT TIMESTAMP WITH TIME ZONE ‘epoch’ Unix timestamp) * INTERVAL ‘1 second’;Python先import time然后time.gmtime(Unix timestamp)RubyTime.at(Unix timestamp)SQL ServerDATEADD(s,Unix timestamp, ‘1970-01-01 00:00:00’)VBScript / ASPDateAdd(“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))”3.各种编程语言中实现普通时间转换为Unix时间戳方法：Javalong epoch = new java.text.SimpleDateFormat(“dd/MM/yyyy HH:mm:ss”).parse(“01/01/1970 01:00:00”);JavaScriptvar commonTime = new Date(Date.UTC(year,month- 1,day,hour,minute,second))MySQLSELECT unix_timestamp(time)时间格式: YYYY-MM-DD HH:MM:SS 或 YYMMDD 或 YYYYMMDDPerl先use Time::Local然后my $time = timelocal($sec, $min, $hour, $day, $month, $year);PHPmktime(hour,minute,second,day,month,year)PostgreSQLSELECT 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’)))RubyTime.local(year,month,day,hour,minute,second)SQL ServerSELECT DATEDIFF(s, ‘1970-01-01 00:00:00’,time)Unix / Linuxdate %s -d”Jan 1, 1970 00:00:01″VBScript / ASPDateDiff(“s”, “01/01/1970 00:00:00”,time)
?? 2016 PHP开发学习门户
http://tool.phpthinking.com/convert/unixTimestamp
