PHP Compute Time

<?phpechoDate' Y-m-d h:i:s ',Time ());Running results (month, day and minute, "-" interval): 2014-09-12 06:28:32echoDate' Y-m-d ',Time ());Run result (year, month, "-" interval): 2014-09-12echoDate' Y-m-d ',Strtotime (Date' Y-m-d ',Time ()-86400)));Run result (day of the month before the current date, "-" interval): 2014-09-11echoDate' Ymd ',Time ());Results of operation (year Month day, no interval): 20140912echoDate' M-d ',Time ());Run result (Month day, "-" interval): 09-12echoStr_replace ("-","Month",Date' M-d ',Time ()-date (' W ',Time ()) *86400)). " Day ";Running results (Month day, kanji display interval): September 12 EchoDate' W ',Time ());Running results (days of the week): 5echotime (); //run result (seconds of current datetime): 1410503809echo strtotime (date ( ' y-m-d ', time ()));  Run result (current date seconds, specific to day): 1410503809echo date ( ' y-m-d ', strtotime (date ( ' Y-m-d ', time ())) -date ( ' W ', strtotime (date ( ' Y-m-d ', time ()))) *86400); //run result (the date of the natural week to which the current date belongs is Sunday, specific to day, "-" interval): 2014-09-07       

PHP gets 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 gets yesterday 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 gets last week start timestamp and end timestamp$beginLastweek =mktime (0,0,0,Date' m '),Date' d ')-Date' W ') +1-7,Date' Y '));$endLastweek =mktime (23,59,59,Date' m '),Date' d ')-Date ' W ') +7-7, date ( ' Y ')); //php get this month start timestamp and end timestamp  $beginThismonth =mktime (0,0,0,date (1,date (  $endThismonth =mktime (23,59,< Span class= "Hljs-number" >59,date ( ' m '), date ( ' t '), date (             

<?php/**date 2015-04-11 * Author http://www.lai18.com **/EchoDate"Ymd", Strtotime ("Now")),"\ n"; EchoDate"Ymd", Strtotime ("-1 week Monday")),"\ n"; EchoDate"Ymd", Strtotime ("-1 week Sunday")),"\ n"; EchoDate"Ymd", Strtotime ("+0 Week Monday")),"\ n"; EchoDate"Ymd", Strtotime ("+0 Week Sunday")),"\ n"; Echo"*********:" In the first few months; EchoDate' n '); Echo"********* Week of the week:"; EchoDate"W"); Echo"********* Days of the Month:"; EchoDate"T"); Echo"*********"; Echo' <br>:<br> ' at the start of last week; EchoDate"Y-m-d h:i:s", Mktime (0,0,0,Date"M"),Date"D")-Date"W") +1-7,Date"Y")),"\ n"; EchoDate"Y-m-d h:i:s", Mktime (23,59,59,Date"M"),Date"D")-Date"W") +7-7,Date"Y")),"\ n"; Echo' <br> start time:<br> '; EchoDate"Y-m-d h:i:s", Mktime (0,0,0,Date"M"),Date"D")-Date"W") +1,Date"Y")),"\ n"; EchoDate"Y-m-d h:i:s", Mktime (23,59,59,Date"M"),Date"D")-Date"W") +7,Date"Y")),"\ n"; Echo' <br> last month start time:<br> '; EchoDate"Y-m-d h:i:s", Mktime (0,0,0,Date"M")-1,1,Date"Y")),"\ n"; EchoDate"Y-m-d h:i:s", Mktime (23,59,59,Date"M"),0,Date"Y")),"\ n"; Echo' <br> start time:<br> '; EchoDate"Y-m-d h:i:s", Mktime (0,0,0,Date"M"),1,Date"Y")),"\ n"; EchoDate"Y-m-d h:i:s", Mktime (23,59,59,Date"M"),Date"T"),Date"Y")),"\ n";$season =Ceil ((Date' n '))/3);The month is the first quarter of the Echo' <br> this quarter start time:<br> '; EchoDate' Y-m-d h:i:s ', Mktime (0,0,0,$season*3-3 +1,1,Date' Y ')),"\ n"; EchoDate' Y-m-d h:i:s ', Mktime (23,59,59,$season,Date' t ', mktime (0,0,0,$season,1,Date"Y")),Date' Y ')),"\ n";$season =Ceil ((Date' n '))/3)-1;Last quarter was the first quarter of the Echo' <br> last quarter start time:<br> '; EchoDate' Y-m-d h:i:s ', Mktime (0,0,0, $season *3-3+ 1,1,date ( date ( ' y-m-d h:i:s ', mktime (23,59, 59, $season *3,date (0,  0, 0, $season *3,1,date (" Y ")))      

PHP Calculation time