PHP date plus subtraction calculation

PHP Standard date format

Date ("y-m-d h:i:s");

PHP simple date plus and minus calculation

<?php    date_default_timezone_set (' PRC ');//default time zone    echo "Today:", Date ("Y-m-d", Time ()), "\ n";    echo "Today:", Date ("Y-m-d", Strtotime ("June")), "\ n";    echo "Yesterday:", Date ("Y-m-d", Strtotime ("1 day"), "\ n";    echo "Tomorrow:", Date ("Y-m-d", Strtotime ("+1 Day"), "\ n";    echo "One week later:", Date ("Y-m-d", Strtotime ("+1 Week")), "\ n";    echo "2 days a week four hours two seconds after:", Date ("Y-m-d g:h:s", Strtotime ("+1 Week 2 Day 4 hours 2 Seconds"), "\ n";    echo "Next week Four:", Date ("Y-m-d", Strtotime ("next Thursday")), "\ n";    echo "Previous Monday:". Date ("Y-m-d", Strtotime ("Last Monday")). " \ n ";    echo "One months ago:". Date ("Y-m-d", Strtotime ("Last month"). " \ n ";    echo "One months later:". Date ("Y-m-d", Strtotime ("+1 Month")). " \ n ";    echo "Ten years later:". Date ("Y-m-d", Strtotime ("+10 Year")). " \ n ";? >

Operation Result:

Today: 2017-11-06

Today: 2008-06-18

Yesterday: 2017-11-05

Tomorrow: 2017-11-07

After one week: 2017-11-13

2 days a week four hours two seconds later: 2017-11-15 22:22:42

Next Thursday: 2017-11-09

Last Monday: 2017-10-30

One months ago: 2017-10-06

One months later: 2017-12-06

Ten years later: 2027-11-06

PHP advanced date Plus and minus calculation

<?php    //default time zone    date_default_timezone_set (' PRC ');         echo "Today:", Date (' y-m-d h:i:s '), "\ n";       Output Current time    echo "Tomorrow:", Date (' y-m-d h:i:s ', Strtotime (' +1 Day ')), "\ n";        Output tomorrow time         //strtotime can accept the second parameter, type timestamp for the specified date    echo date (' y-m-d h:i:s ', Strtotime ("+1 Day", Strtotime (' 2017-11-11 ')), "\ n";              Here +1 day can modify parameter 1 for any desired number/day     can also be changed to year (years) month (month) hour (hours) minute (min) second (seconds)    echo date (' y-m-d h:i:s ', Strtotime ("+1 day +1 hour +1 minute")), "\ n";? >

Operation Result:

Today: 2017-11-06 18:58:04
Tomorrow: 2017-11-07 18:58:04
2017-11-12 00:00:00
2017-11-07 19:59:04

PHP Advanced Calculation Date Time difference

<?php//default time zone Date_default_timezone_set (' PRC ');     echo Date ("Y-m-d h:i:s"), "\ n";     Date days Add function echo date (' y-m-d ', Strtotime (' +1 Day ', Strtotime (' 2016-09-12 '))), "\ n";    echo strtotime (' 2016-09-12 '), "\ n";    echo Date ("y-m-d", ' 1473609600 '), "\ n";     echo Date ("y-m-d", ' 1573609600 '), "\ n";    Date number Add function $d = "2016-09-12 10:12:20";       echo Date ("Y-m-d", Strtotime ("$d +1 Day"), "\ n";  Convert date to Time intercept function Date2time ($d) {$year = ((int) substr ("$d", 0,4)); Year $month = ((int) substr ("$d", 5,2));   Gets the Month $day = ((int) substr ("$d", 8,2));    Gets the number of return Mktime (0,0,0, $month, $day, $year);     } Echo Date2time ("2016-09-12"), "\ n";    $date _1= "2066-09-12";    $date _2= "2016-09-12";    $Date _list_a1=explode ("-", $date _1);    $Date _list_a2=explode ("-", $date _2);    $d 1=mktime (0,0,0, $Date _list_a1[1], $Date _list_a1[2], $Date _list_a1[0]);    $d 2=mktime (0,0,0, $Date _list_a2[1], $Date _list_a2[2], $Date _list_a2[0]); $Days =round (($d 1-$d 2)/3600/24); echo "$date _2 $date _1 difference: $Days days", "\ n";? >

Operation Result: 2017-11-06 19:13:02

2016-09-13

1473609600

2016-09-12

2019-11-13

2016-09-13

1473609600

2066-09-12-2016-09-12 difference: 18,262 days