PHP method to convert digital time: first create a PHP sample file; then get the 0 o'clock timestamp of the day; finally use the "date("Y-m-d H:i:s",$dotime);" method to convert the digital Just convert the time into time format according to the format.
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php value conversion time and time conversion value
Code Example
This article mainly introduces the use of php numerical conversion time and time conversion numerical value, involving functions such as php strtotime and date to implement date string format and Unix timestamp format conversion related For operating skills, friends in need can refer to the following examples of this article to describe the use of PHP numerical conversion time and time conversion numerical value. Share it with everyone for your reference, the details are as follows:
echo $startime=strtotime(date("Y-m-d",time()));//当天0点时间戳 echo "<br/>"; echo $endttime=strtotime(date("Y-m-d",time()).' 23:59:59');//当天23:59:59的INT类型时间戳 echo "<br/>"; //把数值型转成时间字符型 $dotime="1357985479"; echo date("Y-m-d H:i:s",$dotime);//把数字型时间按格式转换成时间格 echo "<br/>"; //输出当前时间字符串型 echo strtotime(date('Y-m-d H:i:s',time())); echo "<br/>"; //把数值型转成字符串型 echo date('Y-m-d H:i:s','1357985479'); echo "<br/>"; //把字符串型转成数值型 echo strtotime('Y-m-d H:i:s'); //echo "<br/>"; //最近七天 echo strtotime("-7 days")
The running results are as follows:
1495065600 1495151999 2013-01-12 10:11:19 1495073470 2013-01-12 10:11:19 1494468670
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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”。

实现方法:1、使用“sleep(延迟秒数)”语句,可延迟执行函数若干秒;2、使用“time_nanosleep(延迟秒数,延迟纳秒数)”语句,可延迟执行函数若干秒和纳秒;3、使用“time_sleep_until(time()+7)”语句。

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。

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。

方法:1、用“str_replace(" ","其他字符",$str)”语句,可将nbsp符替换为其他字符;2、用“preg_replace("/(\s|\ \;||\xc2\xa0)/","其他字符",$str)”语句。

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)”。

php字符串有下标。在PHP中,下标不仅可以应用于数组和对象,还可应用于字符串,利用字符串的下标和中括号“[]”可以访问指定索引位置的字符,并对该字符进行读写,语法“字符串名[下标值]”;字符串的下标值(索引值)只能是整数类型,起始值为0。


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