Php date addition and subtraction operation implementation code

In php, if we get another date by adding or subtracting a few days from a date, we will use two instances to indicate that the time is converted to the timestamp by strtotime and mktime and then processed, if you need it, check it out. Example: obtain 1 before January 1...

In php, if we get another date by adding or subtracting a few days from a date, we will use two instances to indicate that the time is converted to the timestamp by strtotime and mktime and then processed, if you need it, check it out.

Example: obtain the date of the previous day from January 1 ,.

The code is as follows:
// Convert a time point to a timestamp $ Date = strtotime ('2017-5-1 '); // Output the date before the day, minus the number of seconds of the day in the timestamp Echo date ('Y-m-D', $ date-1*24*60*60 ); ?>

Output: 2012-4-30

In addition, the time () function obtains the timestamp of the current date!

Let's look at another instance.

The code is as follows:

$ Date_1 = ""; // format: $ Date_1 = "23:29:14 ″; $ Date_2 = "2009-10-1 ″; $ Date_List_a1 = explode ("-", $ Date_1 ); $ Date_List_a2 = explode ("-", $ Date_2 ); $ D1 = mktime (0, 0, 0, $ Date_List_a1 [1], $ Date_List_a1 [2], $ Date_List_a1 [0]); $ D2 = mktime (0, 0, 0, $ Date_List_a2 [1], $ Date_List_a2 [2], $ Date_List_a2 [0]); $ Days = round ($ d1-$ d2)/3600/24 ); Echo "the difference between the two dates is $ Days "; ?>

Time reference

The code is as follows:

Display format: year-month-day hour: minute: wonderful

Related time parameters:

A-"am" or "pm"
A-"AM" or "PM"
D-a few days, two digits. if there are less than two digits, add zero in front, for example, "01" to "31 ″
D-the day of the week, with three English letters, for example, "Fri"
F-month, full English name, for example, "January"
H-12 hours, for example, "01" to "12 ″
H-24 hours, for example, "00" to "23 ″
For hours in the g-12 hour format, less than two do not fill in the zero; for example: "1" to 12 ″
For hours in the G-24 hour system, less than two do not make up zero; for example, "0" to "23 ″
I-minutes; for example, "00" to "59 ″
J-a few days, two digits. if less than two digits are left blank, for example, "1" to "31 ″
L-the day of the week, full name in English; for example, "Friday"
M-month, two digits. if there are less than two digits, add zero in front. for example, "01" to "12 ″
N-month, two digits. if less than two digits are left blank, for example, "1" to "12 ″
M-month, with three English letters, for example, Jan"
S-seconds; for example, "00" to "59 ″
The end of the S-character is followed by an English sequence number with two English letters, such as "th" and "nd"
T-specifies the number of days in a month. for example, "28" to "31 ″
U-total seconds
W-number of weeks, for example, "0" (Sunday) to "6" (Saturday)
Y-year, four digits, for example, "1999 ″
Y-year, two digits, for example, "99 ″
Z-the day of the year. for example, "0" to "365 ″

You can freely set the displayed content, connection symbols, or display locations, such as date ("m-d H") or date ("dmY");?> And so on

Tutorial address:

Reprinted! But please include the article address ^