You may already know about timestamps, so how do we apply it to get a specific date? Today we will introduce to you the specific method of obtaining the current period from PHP timestamp.
Implementation function: Get the timestamp of a certain date, or get the PHP timestamp of a certain time.
strtotime can parse the date and time description of any English text into a Unix timestamp. We combine mktime() or date() to format the date and time to obtain the specified timestamp to achieve the required date and time.
strtotime Parses the date and time description of any English text into a Unix timestamp [Convert system time into a unix timestamp]
One, obtains the unix timestamp of the specified date strtotime("2009- 1-22″) The example is as follows:
echo strtotime(”2009-1-22″) Result: 1232553600
Description: Return the timestamp of 0:00:00 on January 22, 2009
Second, an example of obtaining the English text date and time is as follows:
For comparison, use date to convert the current timestamp and the specified timestamp into system time
(1) Print the timestamp at this time tomorrow strtotime(" +1 day")
Current time: echo date("Y-m-d H:i:s",time()) Result: 2009-01-22 09:40:25
Specified time: echo date("Y-m-d H:i:s”,strtotime(”+1 day”)) Result: 2009-01-23 09:40:25
(2) Print the PHP timestamp of yesterday at this time strtotime(”-1 day")
Current time: echo date("Y-m-d H:i:s",time()) Result: 2009-01-22 09:40:25
Specified time: echo date("Y-m-d H: i:s”,strtotime(”-1 day”)) Result: 2009-01-21 09:40:25
(3) Print the timestamp at this time next week strtotime(”+1 week ")
Current time: echo date("Y-m-d H:i:s",time()) Result: 2009-01-22 09:40:25
Specified time: echo date("Y-m-d H:i :s",strtotime("+1 week")) Result: 2009-01-29 09:40:25
(4) Print the timestamp at this time last week strtotime("-1 week" )
Current time: echo date(”Y-m-d H:i:s”,time()) Result: 2009-01-22 09:40:25
Specified time: echo date(”Y-m-d H:i: s",strtotime("-1 week")) Result: 2009-01-15 09:40:25
(5) Print the PHP timestamp of the specified day of the next week strtotime("next Thursday")
Current time: echo date("Y-m-d H:i:s",time()) Result: 2009-01-22 09:40:25
Specified time: echo date("Y-m-d H:i:s" ,strtotime("next Thursday")) Result: 2009-01-29 00:00:00
(6) Print the timestamp of the specified day of the week strtotime("last Thursday")
Current time :echo date("Y-m-d H:i:s",time()) Result: 2009-01-22 09:40:25
Specified time: echo date("Y-m-d H:i:s",strtotime(" last Thursday”)) Result: 2009-01-15 00:00:00
As can be seen from the above example, strtotime can parse the date and time description of any English text into a Unix timestamp. We combine it with mktime() or date ()Format date and time to obtain the specified PHP timestamp and achieve the required date and time.

php把负数转为正整数的方法:1、使用abs()函数将负数转为正数,使用intval()函数对正数取整,转为正整数,语法“intval(abs($number))”;2、利用“~”位运算符将负数取反加一,语法“~$number + 1”。

如何利用GitLab进行项目文档管理一、背景介绍在软件开发过程中,项目文档是非常重要的资料,不仅能够帮助开发团队了解项目的需求和设计,还能提供给测试团队和客户参考。为了方便项目文档的版本控制和团队协作,我们可以利用GitLab来进行项目文档管理。GitLab是一个基于Git的版本控制系统,除了支持代码管理,还可以管理项目文档。二、GitLab环境搭建首先,我

php除以100保留两位小数的方法:1、利用“/”运算符进行除法运算,语法“数值 / 100”;2、使用“number_format(除法结果, 2)”或“sprintf("%.2f",除法结果)”语句进行四舍五入的处理值,并保留两位小数。

判断方法:1、使用“strtotime("年-月-日")”语句将给定的年月日转换为时间戳格式;2、用“date("z",时间戳)+1”语句计算指定时间戳是一年的第几天。date()返回的天数是从0开始计算的,因此真实天数需要在此基础上加1。

在php中,可以使用substr()函数来读取字符串后几个字符,只需要将该函数的第二个参数设置为负值,第三个参数省略即可;语法为“substr(字符串,-n)”,表示读取从字符串结尾处向前数第n个字符开始,直到字符串结尾的全部字符。

php判断有没有小数点的方法:1、使用“strpos(数字字符串,'.')”语法,如果返回小数点在字符串中第一次出现的位置,则有小数点;2、使用“strrpos(数字字符串,'.')”语句,如果返回小数点在字符串中最后一次出现的位置,则有。

查找方法:1、用strpos(),语法“strpos("字符串值","查找子串")+1”;2、用stripos(),语法“strpos("字符串值","查找子串")+1”。因为字符串是从0开始计数的,因此两个函数获取的位置需要进行加1处理。

在PHP中,可以利用implode()函数的第一个参数来设置没有分隔符,该函数的第一个参数用于规定数组元素之间放置的内容,默认是空字符串,也可将第一个参数设置为空,语法为“implode(数组)”或者“implode("",数组)”。


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