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Homephp教程php手册PHP中strtotime函数使用方法分享_php基础

一,获取指定日期的unix时间戳
strtotime("2009-1-22") 示例如下:
1.echo strtotime("2009-1-22")

结果:1232553600
说明:返回2009年1月22日0点0分0秒时间戳
二,获取英文文本日期时间
示例如下:
便于比较,使用date将当时间戳与指定时间戳转换成系统时间
(1)打印明天此时的时间戳strtotime("+1 day")
当前时间:
1.echo date("Y-m-d H:i:s",time())

结果:2009-01-22 09:40:25
指定时间:
1.echo date("Y-m-d H:i:s",strtotime("+1 day"))

结果:2009-01-23 09:40:25
(2)打印昨天此时的时间戳strtotime("-1 day")
当前时间:
1.echo date("Y-m-d H:i:s",time())

结果:2009-01-22 09:40:25
指定时间:
1.echo date("Y-m-d H:i:s",strtotime("-1 day"))

结果:2009-01-21 09:40:25
(3)打印下个星期此时的时间戳strtotime("+1 week")
当前时间:
1.echo date("Y-m-d H:i:s",time())

结果:2009-01-22 09:40:25
指定时间:
1.echo date("Y-m-d H:i:s",strtotime("+1 week"))

结果:2009-01-29 09:40:25
(4)打印上个星期此时的时间戳strtotime("-1 week")
当前时间:
1.echo date("Y-m-d H:i:s",time())

结果:2009-01-22 09:40:25
指定时间:
1.echo date("Y-m-d H:i:s",strtotime("-1 week"))

结果:2009-01-15 09:40:25
(5)打印指定下星期几的时间戳strtotime("next Thursday")
当前时间:
1.echo date("Y-m-d H:i:s",time())

结果:2009-01-22 09:40:25
指定时间:
1.echo date("Y-m-d H:i:s",strtotime("next Thursday"))

结果:2009-01-29 00:00:00
(6)打印指定上星期几的时间戳strtotime("last Thursday")
当前时间:
1.echo date("Y-m-d H:i:s",time())

结果:2009-01-22 09:40:25
指定时间:
1.echo date("Y-m-d H:i:s",strtotime("last Thursday"))

结果:2009-01-15 00:00:00
以上示例可知,strtotime能将任何英文文本的日期时间描述解析为Unix时间戳,我们结合mktime()或date()格式化日期时间获取指定的时间戳,实现所需要的日期时间。
希望通过本文的介绍后,你已经能掌握strtotime函数用法。
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