PHP uses strtotime or mktime to specify date data (this week, last week, this month, last month, this quarter)_PHP tutorial

This article will introduce to you some examples of using PHP to specify date data (this week, last week, this month, last month, this quarter) using strtotime or mktime. I hope it will be helpful to you.

strtotime definition and usage

The

strtotime() function parses any English text datetime description into a Unix timestamp.

Grammar

strtotime(time,now) parameter description
time specifies the time string to be parsed.
now is the timestamp used to calculate the return value. If this parameter is omitted, the current time is used.

Example

The code is as follows

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代码如下 复制代码 echo date("Y-m-d",strtotime("now")), " "; echo date("Y-m-d",strtotime("-1 week Monday")), " "; //离现在最近的周一 echo date("Y-m-d",strtotime("-1 week Sunday")), " "; //离现在最近的周末 echo date("Y-m-d",strtotime("+0 week Monday")), " "; //将要到来的周一 echo date("Y-m-d",strtotime("+0 week Sunday")), " "; //将要到来的周末 echo date("n");// 第几个月 echo date("w");//本周周几 echo date("t");// 本月天数 echo " 上周: "; echo date("Y-m-d",strtotime("now")), " "; echo date("Y-m-d",strtotime("-1 week Monday")), " "; //The closest Monday to now echo date("Y-m-d",strtotime("-1 week Sunday")), " "; //The closest weekend to now echo date("Y-m-d",strtotime("+0 week Monday")), " "; //The coming Monday echo date("Y-m-d",strtotime("+0 week Sunday")), " "; //The upcoming weekend echo date("n");//month echo date("w");//What day of the week echo date("t");//number of days in this month echo " Last week: ";

mktime function

The mktime() function returns the Unix timestamp of a date.

The argument always represents a GMT date, so is_dst has no effect on the result. ');
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代码如下	复制代码
echo date("Y-m-d H:i:s",mktime(0, 0 , 0,date("m"),date("d")-date("w")+1-7,date("Y")))," "; echo date("Y-m-d H:i:s",mktime(23,59,59,date("m"),date("d")-date("w")+7-7,date("Y")))," "; echo " 本周: "; echo date("Y-m-d H:i:s",mktime(0, 0 , 0,date("m"),date("d")-date("w")+1,date("Y")))," "; echo date("Y-m-d H:i:s",mktime(23,59,59,date("m"),date("d")-date("w")+7,date("Y")))," "; echo " 上月: "; echo date("Y-m-d H:i:s",mktime(0, 0 , 0,date("m")-1,1,date("Y")))," "; echo date("Y-m-d H:i:s",mktime(23,59,59,date("m") ,0,date("Y")))," "; echo " 本月: "; echo date("Y-m-d H:i:s",mktime(0, 0 , 0,date("m"),1,date("Y")))," "; echo date("Y-m-d H:i:s",mktime(23,59,59,date("m"),date("t"),date("Y")))," "; $getMonthDays = date("t",mktime(0, 0 , 0,date("n")+(date("n")-1)%3,1,date("Y")));//本季度未最后一月天数 echo " 本季度: "; echo date('Y-m-d H:i:s', mktime(0, 0, 0,date('n')-(date('n')-1)%3,1,date('Y')))," "; echo date('Y-m-d H:i:s', mktime(23,59,59,date('n')+(date('n')-1)%3,$getMonthDays,date('Y')))," "; $jdtoday = gregoriantojd(date('n'), date('j'), date('y')); $offset = jddayofweek($jdtoday)-1; for($i=0-$offset; $i<7-$offset; $i++){ $date = strtotime($i.' days'); echo('		'.date('D', $date).'/'.date('n-j', $date).'

The parameters can be left empty in order from right to left, and the empty parameters will be set to the corresponding current GMT value. Grammar mktime(hour,minute,second,month,day,year,is_dst) Example '); } ?>

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echo date("Y-m-d H:i:s ",mktime(0, 0 , 0,date("m"),date("d")-date("w")+1-7,date("Y")))," "; echo " This week: "; echo date("Y-m-d H:i:s",mktime(0, 0 , 0,date("m"),date("d")-date("w")+1,date("Y")) )," "; echo date("Y-m-d H:i:s",mktime(23,59,59,date("m"),date("d")-date("w")+7,date("Y")) )," "; echo " Last month: "; echo date("Y-m-d H:i:s",mktime(0, 0 , 0,date("m")-1,1,date("Y")))," "; echo date("Y-m-d H:i:s",mktime(23,59,59,date("m") ,0,date("Y")))," "; echo " This month: "; echo date("Y-m-d H:i:s",mktime(0, 0 , 0,date("m"),1,date("Y")))," "; echo date("Y-m-d H:i:s",mktime(23,59,59,date("m"),date("t"),date("Y")))," "; $getMonthDays = date("t",mktime(0, 0 , 0,date("n")+(date("n")-1)%3,1,date("Y")));// Number of days in the last month of the quarter echo " This quarter: "; echo date('Y-m-d H:i:s', mktime(0, 0, 0,date('n')-(date('n')-1)%3,1,date('Y'))) ," "; echo date('Y-m-d H:i:s', mktime(23,59,59,date('n')+(date('n')-1)%3,$getMonthDays,date('Y')) )," "; $jdtoday = gregoriantojd(date('n'), date('j'), date('y')); $offset = jddayofweek($jdtoday)-1; for($i=0-$offset; $i<7-$offset; $i++){<🎜> $date = strtotime($i.' days');<🎜> echo('		'.date('D', $date).'/'.date('n-j', $date).'

Parameters	Description

参数	描述
hour	可选。规定小时。
minute	可选。规定分钟。
second	可选。规定秒。
month	可选。规定用数字表示的月。
day	可选。规定天。
year	可选。规定年。在某些系统上，合法值介于 1901 - 2038 之间。不过在 PHP 5 中已经不存在这个限制了。
is_dst	可选。如果时间在日光节约时间(DST)期间，则设置为1，否则设置为0，若未知，则设置为-1。 自 5.1.0 起，is_dst 参数被废弃。因此应该使用新的时区处理特性。

hour Optional. Specified hours. minute Optional. Specified minutes.

second