In the development process, the commonly used date processing functions, timestamp processing functions, etc. are explained as follows: <?php echo date('Y-m-d h:i:s',time()); //Running result (year, month, day, hour, minute, second, "-" interval): 2014-09-12 06:28:32 echo date('Y-m-d',time()); //Running result (year month day, "-" interval): 2014-09-12 echo date('Y-m-d',strtotime(date('Y-m-d', time()-86400))); //Running result (year, month, day of the day before the current date, "-" interval): 2014-09-11 echo date('Ymd',time()); //Running result (year month day, no interval): 20140912 echo date('m-d',time()); //Running result (month day, "-" interval): 09-12 echo str_replace("-","月",date('m-d',time()-date('w',time())*86400))."日"; //Running result (month and day, Chinese character display interval): September 12 echo date('w',time()); //Run result (day of week): 5 echo time(); //Running result (seconds of current date and time): 1410503809 echo strtotime(date('Y-m-d',time())); //Running result (seconds of current date, specific to day): 1410503809 echo date('Y-m-d',strtotime(date('Y-m-d', time()))-date('w',strtotime(date('Y-m-d', time())))*86400); //Running result (the starting date of the natural week to which the current date belongs is the date of Sunday, specific to the day, "-" interval): 2014-09-07
//php get today's start timestamp and end timestamp $beginToday=mktime(0,0,0,date('m'),date('d'),date('Y')); $endToday=mktime(0,0,0,date('m'),date('d')+1,date('Y'))-1; //php get yesterday's start timestamp and end timestamp $beginYesterday=mktime(0,0,0,date('m'),date('d')-1,date('Y')); $endYesterday=mktime(0,0,0,date('m'),date('d'),date('Y'))-1; //php get the start timestamp and end timestamp of last week $beginLastweek=mktime(0,0,0,date('m'),date('d')-date('w')+1-7,date('Y')); $endLastweek=mktime(23,59,59,date('m'),date('d')-date('w')+7-7,date('Y')); //php get the start timestamp and end timestamp of this month $beginThismonth=mktime(0,0,0,date('m'),1,date('Y')); $endThismonth=mktime(23,59,59,date('m'),date('t'),date('Y'));
<?php /**date 2015-04-11 * author http://www.lai18.com **/ echo date("Ymd",strtotime("now")), "\n"; echo date("Ymd",strtotime("-1 week Monday")), "\n"; echo date("Ymd",strtotime("-1 week Sunday")), "\n"; echo date("Ymd",strtotime("+0 week Monday")), "\n"; echo date("Ymd",strtotime("+0 week Sunday")), "\n"; echo "*********Month month:"; echo date('n'); echo "*********Day of the week:"; echo date("w"); echo "*********Days in this month:"; echo date("t"); echo "*********"; echo '<br>Starting time of last week:<br>'; echo date("Y-m-d H:i:s",mktime(0, 0 , 0,date("m"),date("d")-date("w")+1-7,date("Y"))),"\n"; echo date("Y-m-d H:i:s",mktime(23,59,59,date("m"),date("d")-date("w")+7-7,date("Y"))),"\n"; echo '<br>Start of this week:<br>'; echo date("Y-m-d H:i:s",mktime(0, 0 , 0,date("m"),date("d")-date("w")+1,date("Y"))),"\n"; echo date("Y-m-d H:i:s",mktime(23,59,59,date("m"),date("d")-date("w")+7,date("Y"))),"\n"; echo '<br>Start time of last month:<br>'; echo date("Y-m-d H:i:s",mktime(0, 0 , 0,date("m")-1,1,date("Y"))),"\n"; echo date("Y-m-d H:i:s",mktime(23,59,59,date("m") ,0,date("Y"))),"\n"; echo '<br>Start of this month:<br>'; echo date("Y-m-d H:i:s",mktime(0, 0 , 0,date("m"),1,date("Y"))),"\n"; echo date("Y-m-d H:i:s",mktime(23,59,59,date("m"),date("t"),date("Y"))),"\n"; $season = ceil((date('n'))/3);//What quarter is the month echo '<br>Start of this quarter:<br>'; echo date('Y-m-d H:i:s', mktime(0, 0, 0,$season*3-3+1,1,date('Y'))),"\n"; echo date('Y-m-d H:i:s', mktime(23,59,59,$season*3,date('t',mktime(0, 0 , 0,$season*3,1,date("Y"))),date('Y'))),"\n"; $season = ceil((date('n'))/3)-1;//What quarter is the last quarter echo '<br>Start time of last quarter:<br>'; echo date('Y-m-d H:i:s', mktime(0, 0, 0,$season*3-3+1,1,date('Y'))),"\n"; echo date('Y-m-d H:i:s', mktime(23,59,59,$season*3,date('t',mktime(0, 0 , 0,$season*3,1,date("Y"))),date('Y'))),"\n"; ?>