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Beijing time is East 8, which may be due to time zone issues. but it was okay before. after google found that php started from php5.1.0. date is added to ini. the timezone option is disabled by default:
Php function date ("Y-n-d H-I-s"); the output time is 8 hours different from the local time.
Solution
Beijing time is East 8, which may be due to time zone i
PHP Output Time difference function
Copy Code code as follows:
Date_default_timezone_set (' PRC ');//default time zone
echo "Today:", Date ("Y-m-d", Time ()), " Echo "Today:", Date ("Y-m-d", Strtotime ("June 2008")), " Echo yesterday:", Date ("Y-m-d",
Label:One: Connectors in individual data Connector for SQL Server: + (plus) SQLite's connector:. (dot) Connector for PostgreSQL: | | Or Two: Today, when PostgreSQL calculates the date, I turn over some information, rarely, record it! The functions and variables used in these To_char (), Date (), now (), current_date Calculates the difference of two dates Current_
Problem:
PHP function date ("Y-n-d h-I-s"); the output time is 8 hours different from the local time.
Solution
Beijing time is East 8, which may be due to time zone issues. but it was okay before. After Google found that PHP started from php5.1.0. date is added to ini. the timezone option is disabled by default, that is, the displayed time (no matter what php
represents 0 (Sunday) to 6 (Saturday)N ISO-8601 format number represents the day of the week (PHP 5.1.0 new Plus) 1 (Monday) to 7 (Sunday)The week of the year in W ISO-8601 format, starting from Monday (PHP 4.1.0 New) 42 (42nd Week of the year)WhenG-hour, 12-hour format, without leading 1 to 12G-hour, 24-hour format, without leading 00 to 23H-hour, 12-hour format, with leading 1 to 12H-hour, 24-hour format, with leading 000 to 23Score ofI have a leading zero minute number 00 to 59>Seconds:S num
Numeric FunctionsABS (): returns the absolute value.CEILING (): round to the maximum integer.FLOOR (): round to the smallest integer.ROUND (): ROUND (A, B) A is the number to be processed, and B is the number of digits accurate to the decimal point.LEN (): calculates the string length.LOWER () and UPPER (): lowercase and UPPER caseLTRIM (): removes spaces on the left of the string.RTRIM (): remove the spaces on the right of the stringSUBSTRING (string, start_position, length) string is the strin
--Date function--getdate (): Gets the current date--dateadd (interval unit, increment value, source date value): Adds a date value for a specified interval for the specified dateSelect DATEADD (Mm,3,getdate ())Select DATEADD (Mm,-3,getdate ())--datediff (interval unit, start
Number functionABS (): absolute value is obtained.CEILING (): Rounds to the largest integer.FLOOR (): round to Smallest integer.ROUND (): Rounded ROUND (a,b) A is the number to be processed, B is accurate to the decimal point after the first fewLEN (): Calculate string lengthLOWER (), UPPER (): Turn lowercase, uppercaseLTRIM (): The space on the left side of the string is removedRTRIM (): The space on the right side of the string is removedThe SUBSTRING (string,start_position,length) string is t
If you want MySQL to obtain the time and date, what kind of function is better? Using the sysdate () function allows MySQL to obtain the time and date. Let's take a look at this function.
MySQL returns the current date + time)
timeSELECTTo_char (Sysdate,'hh24') asNowhour fromDUAL;--when you get the timeSELECTTo_char (Sysdate,'mi') asNowminute fromDUAL;--get the minutes of the timeSELECTTo_char (Sysdate,'SS') asNowsecond fromDUAL;--gets the seconds of the timeSELECTTo_char (Sysdate,'yyyy "Year" MM "month" DD "Day') asT fromDUAL;--time format with ChineseMonths_between (DATE1,DATE2)-- calculates the month difference between two dates Select months_between ('January-January -
First, the preface
This is done because the two functions are similar in that they are converting strings into groups.
Second, explode
As can be seen from the example below, the resulting array is in a corresponding order.
$pizza = "Piece1 piece2 piece3 piece4 piece5 piece6";
$pieces = Explode ("", $pizza);
echo $pieces [0]; Piece1
echo $pieces [1];//Piece2
//Example 2
$data = "foo:*:1023:1000::/home/foo:/bin/sh";
List ($user, $pass, $uid, $gid, $gecos, $home, $shell) = Explode (":",
All date and time APIs are within the DateTime module.Formatted output for the 1st perioddatetime-= stringImport datetimenow = Datetime.datetime.now ()Now.strftime ('%y-%m-%d%h:%m:%s ')Output' 2015-04-07 19:11:21 'Strftime is an instance method of a DateTime class.string = DateTimeImport datetimeT_str = ' 2015-04-07 19:11:21 'D = datetime.datetime.strptime (T_str, '%y-%m-%d%h:%m:%s ')Strptime is a static method of a DateTime class.There is a Timedelta
Recently, when I was doing mobile web, I was successful with chrome debugging on my PC, but there were strange problems with the real machine on the iphone. After a series of debugging found that the date is related to the problem. It was initially suspected to be a production environment problem, but the same problem has arisen with the Mac version of Safari debugging locally. Looking at some of the data, it turns out that Safari's support for the ne
1, Oracle date in the internal representation is numeric format, precision from century to seconds.2. The default date representation format is DD-MON-RR (not yy)The difference between YY and RR:3. Date Operation functionExample:The second parameter of Next_day can also be a number that represents a
between hours and minutes, for example: +
T the time zone of the local machine
The number of seconds of the Z time difference offset. The time zone offset to the west of UTC is always negative, and the east of UTC is positive. -43200 to 43200
Date in c ISO 8601 format (new PHP 5): 19: 21 + 00: 00
Date in RFC 822 format: Thu, 21 Dec 2000 16:01:07 + 0200
U obtains
Now it seems quite popular to discuss Constellation, the following author shares a function that uses PHP to determine which constellation a date belongs to. The specific function code is as follows:
function constellation ($month, $day) {
//check parameter validity http://www. alixixi.com/
if ($month
After acquiring the time through the date () function, it is found that the hour is not right, 8 hours smaller than the current time, whether with H or H, this is because the current acquisition is Greenwich Mean time, and the difference between 8 hours in Beijing.
The workaround is as follows:1, modify the php.ini configuration file
Open the php.ini file, gene
:yyyymmddhhmmssffff}", DT); 132 133 134 135 Calculates the difference in days between 2 dates 136 137-------------------------------------------- ---138 139 DateTime dt1 = Convert.datetime ("2007-8-1"); 141 DateTime DT2 = Convert.datetime ("2007-8-15"); 142 143 TimeSpan span = DT2. Subtract (DT1); 144 145 int Daydiff = span. Days + 1; 146 147 calculates the number of days in a certain year 148 149------------------
1. Add 1 for monthCanlendar.month + 1Because the Roman calendar is used, the value returned by Calendar.month is not the month of the year, but the difference from the first month in the current month.For example: The current month is September, distance January, the difference is 8, so canlendar.month returns 8 instead of 92. When to get a week minus 1Calendar.day_of_week-1Getting the current
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