Definition and Usage
The date() function formats a local time/date.
Syntaxdate(format,timestamp)
ParameterDescriptionformat Required. Specifies how to return the result:
- d - The day of the month (from 01 to 31)
- D - A textual representation of a day (three letters)
- j - The day of the month without leading zeros (1 to 31)
- l (lowercase ‘L‘) - A full textual representation of a day
- N - The ISO-8601 numeric representation of a day (1 for Monday through 7 for Sunday)
- S - The English ordinal suffix for the day of the month (2 characters st, nd, rd or th. Works well with j)
- w - A numeric representation of the day (0 for Sunday through 6 for Saturday)
- z - The day of the year (from 0 through 365)
- W - The ISO-8601 week number of year (weeks starting on Monday)
- F - A full textual representation of a month (January through December)
- m - A numeric representation of a month (from 01 to 12)
- M - A short textual representation of a month (three letters)
- n - A numeric representation of a month, without leading zeros (1 to 12)
- t - The number of days in the given month
- L - Whether it‘s a leap year (1 if it is a leap year, 0 otherwise)
- o - The ISO-8601 year number
- Y - A four digit representation of a year
- y - A two digit representation of a year
- a - Lowercase am or pm
- A - Uppercase AM or PM
- B - Swatch Internet time (000 to 999)
- g - 12-hour format of an hour (1 to 12)
- G - 24-hour format of an hour (0 to 23)
- h - 12-hour format of an hour (01 to 12)
- H - 24-hour format of an hour (00 to 23)
- i - Minutes with leading zeros (00 to 59)
- s - Seconds, with leading zeros (00 to 59)
- e - The timezone identifier (Examples: UTC, Atlantic/Azores)
- I (capital i) - Whether the date is in daylights savings time (1 if Daylight Savings Time, 0 otherwise)
- O - Difference to Greenwich time (GMT) in hours (Example: +0100)
- T - Timezone setting of the PHP machine (Examples: EST, MDT)
- Z - Timezone offset in seconds. The offset west of UTC is negative, and the offset east of UTC is positive (-43200 to 43200)
- c - The ISO-8601 date (e.g. 2004-02-12T15:19:21+00:00)
- r - The RFC 2822 formatted date (e.g. Thu, 21 Dec 2000 16:01:07 +0200)
- U - The seconds since the Unix Epoch (January 1 1970 00:00:00 GMT)
timestampOptional.
example:
function TtoDatetime($text){
$myDatetimeStr=Date(‘Y‘,strtotime($text))."-".Date(‘m‘,strtotime($text))."-".Date(‘d‘,strtotime($text))." ".Date(‘H‘,strtotime($text)).":".Date(‘i‘,strtotime($text)).":".Date(‘s‘,strtotime($text));
return $myDatetimeStr;
}
echo $text;
echo TtoDatetime($text);
result:
"01/07/2012 13:44",2012-01-07 13:44:00
php中DateTime的format格式以及 TtoDatetime函数
原文：http://www.cnblogs.com/penciler/p/4381227.html
