Detailed explanation of php date() date and time function_PHP tutorial

1. Year-month-day
echo date('Y-m-j');
2007-02-6

echo date('y-n-j');
07-2 -6

Uppercase Y represents the four-digit year, while lowercase y represents the two-digit year;
Lowercase m represents the number of the month (with a leading), while lowercase n represents the month without a leading number.

echo date('Y-M-j');
2007-Feb-6

echo date('Y-m-d');
2007-02-06

Capital M represents the 3 abbreviation characters of the month, while lowercase m represents the number of the month (with leading 0);
There is no uppercase J, only lowercase j represents the date of the month, without leading o; if needed If the month is preceded by a lowercase d, use a lowercase d.

echo date('Y-M-j');
2007-Feb-6

echo date('Y-F-jS');
2007-February-6th

Capital M represents the 3 abbreviated characters of the month, while capital F represents the full English character of the month. (No lowercase f)
Capital S represents the suffix of the date, such as "st", "nd", "rd" and "th", depending on the date number.

Summary:
can use uppercase Y and lowercase y to represent the year;
can use uppercase F, uppercase M, lowercase m and lowercase n to represent the month (two ways to represent characters and numbers respectively) );
can use lowercase d and lowercase j to represent the day, and uppercase S represents the suffix of the date.

2, hours: minutes: seconds

By default, the time displayed by PHP interpretation is "Greenwich Mean Time", which is 8 hours different from our local time.

echo date('g:i:s a');
5:56:57 am

echo date('h:i:s A');
05:56:57 AM

A lowercase g indicates a 12-hour format without leading 0s, while a lowercase h indicates a 12-hour format with leading 0s.
When using the 12-hour clock, you need to indicate morning and afternoon. Lowercase a represents lowercase "am" and "pm", and uppercase A represents uppercase "AM" and "PM".

echo date('G:i:s');
14:02:26

Capital G represents the hour in the 24-hour format, but without leading; use uppercase The H represents the hour in the 24-hour format with a leading

Summary:
The letter g represents the hour without a leading, the letter h represents the hour with a leading;
Lowercase g and h represent the 12-hour format, capital G and H represent the 24-hour clock.

3, leap year, week, day

echo date('L');
Whether this year is a leap year: 0

echo date('l');
Today is: Tuesday

echo date('D');
Today is: Tue

Capital L indicates whether this year is a leap year, Boolean value, returns 1 if true, otherwise is 0;
The lowercase l represents the full English version of the day of the week (Tuesday);
The uppercase D is used to represent the 3-character abbreviation of the day of the week (Tue).

echo date('w');
Today's week: 2

echo date('W');
This week is week 06 of the year

Lowercase w represents the day of the week, expressed in numeric form
Capital W represents the number of weeks in the year

echo date('t');
This month has 28 days

echo date('z');
Today is the 36th day of this year

Lowercase t indicates the number of days in the current month
Lowercase z indicates the day of the year today

4, others

echo date('T');
UTC
Capital T represents the time locale of the server

echo date('I') ;
0
Capital I means to determine whether the current daylight saving time is, if true, return 1, otherwise 0

echo date('U');
1170769424
Capital U means The total number of seconds from January 1, 1970 to the present is the UNIX timestamp of the Unix time epoch.

echo date('c');
2007-02-06T14:24:43+00:00
Lowercase c represents the ISO8601 date, the date format is YYYY-MM-DD, using letters T to separate the date and time, the time format is HH:MM:SS, and the time zone is represented by the offset from Greenwich Mean Time (GMT).

echo date('r');
Tue, 06 Feb 2007 14:25:52 +0000
Lowercase r represents the RFC822 date.

Example:

Copy code The code is as follows:

/*
@author hills
@tencentqq 3303911
@web www.abzz.net
@email hackhgs@qq.com
@blog blog.abzz.net
@mobiletelethone 1345-2626-567
@filecreate 2009-12-25-13:20,copyright hills
*/
$utc=date(”T”);
if ($utc==”UTC”)
$h=date(”h”)+8;
$dateshow=date(”Y-m-d “.$h.”:i:s”);
function rn()
{
if (date(”L”)==1)
{
echo “是”;
}
else
{
echo “否”;
}
}
$weeks=date(”l”);
$year=date(”W”);
$dayyear=date(”z”);
$weeksmemberic=date(”t”);
?>

http://www.bkjia.com/PHPjc/321912.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/321912.htmlTechArticle1，年-月-日 echo date('Y-m-j'); 2007-02-6 echo date('y-n-j'); 07-2-6 大写Y表示年四位数字，而小写y表示年的两位数字； 小写m表示月份的数字(带前导)，...