PHP Time and date operation Combat _php Tutorial

Commonly used time functions:
1.time (); Gets the total number of seconds from 1970/1/1 00:00:00 to now


2.mktime (); Set time


3.date (); Detailed information about the time of acquisition

Representative String	Description	Example	Output
Years:
Y	Established (4-bit)		2011
Y	Established (2-bit)		11
Month:
M	month, less than two-bit complement 0 (01~12)		01
N	month, less than two digits do not fill 0 (1~12)		1
T	A total of several days this month (1~31)		31
M	English month name (abbreviation)		Jan
F	English month name (full name)		January
Day:
D	Date, less than two-bit complement 0 (01~31)		01
J	Date, less than two digits not 0 (01~31)		1
Week:
W	Number of weeks, (with 0~6 for one to day)		0
D	Weekday Name (abbreviated)		Sun
L	Week name (full name)		Sunday
When
H	24 o'clock hours, less than two-bit complement 0 (00~23)		07
G	24 o'clock hours, less than two non-complement 0 (0~23)		7
H	12 o'clock hours, less than two-bit complement 0 (01~12)		07
G	12 o'clock hours, less than two non-complement 0 (1~12)		7
Score of
I	Minutes, less than two bits complement 0 (00~59)		40
Seconds:
S	seconds, less than two bit 0 (00~59)		45
S	seconds, less than two bits complement 0 (00~59) plus English order		45th
Last afternoon:
A	Uppercase AM/PM		Am
A	lowercase am/pm		Am
Other:
U	1970/1/1 00:00:00 to the total number of seconds in the specified day		1156780800
Z	The first day of the Year (0~365)		255

* Red bottom represents commonly used parameters

Some common uses:
1. Get the total number of seconds from 0 minutes 0 seconds to today, 0 hours January 1, 1970:
Copy CodeThe code is as follows:
echo Date ("U", Mktime (0,0,0,date ("Y"), Date ("M"), Date ("D"));
?>

2. Get the total number of seconds to 7 days before today:
Copy CodeThe code is as follows:
$setTime = Date ("U", Mktime (0,0,0,7,20,2011));
$time = Date ("U", Mktime (0,0,0,date ("M"), Date ("D"), Date ("Y")));
$start = $time -86400*7;
$over = $time +86400*7;
if ($start >= $time && $time <= $over)
{
echo "Specified time is 7 days before today";
}
Else
{
echo "Specified time is over 7 days before today";
}
?>

http://www.bkjia.com/PHPjc/324112.html www.bkjia.com true http://www.bkjia.com/PHPjc/324112.html techarticle Commonly used time functions: 1.time ();///Get the total number of seconds from 1970/1/1 00:00:00 to now? Echo time (); 2.mktime (); Set the time? Echo Date ("U", Mktime (0,0,0,1,20,2011));//Output ...

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