PHP Date/Time Functions

The date/time functions return you date and time of the server where your PHP scripts are hosted. After getting the date or time you can manipulate according to your requirement.

These functions are the core functionality of the PHP library, so no need of any thing extra  installation

Please note that date/time functions depend on your local server settings and behave according to php.ini settings.

Current Date:

echo date("d-m-Y");
Output: 20-05-2013 // current date

 Current Date and Time:

echo date("d-m-Y H:i:s");
Output: 20-05-2013 22:12:45// current date and time

 Date Parameters:

Format Description Example returned values
Day
d Day of the month in 2 digits with leading zeros 01 to 31
D A textual representation of a day in three letters Mon to Sun
j Day of the month without leading zeros 1 to 31
l(lowercase ‘L’) A full textual representation of the day of the week Sunday to Saturday
N ISO-8601 numeric representation of the day of the week (added in PHP 5.1.0) 1 (for Monday)
7 (for Sunday)
S English ordinal suffix for the day of the month, 2 characters stndrd or th. Works well with j
w Numeric representation of the day of the week 0 (for Sunday)
6 (for Saturday)
z The day of the year starting from 0 0 to 365
Week
W ISO-8601 week number of year, weeks starting on Monday (added in PHP 4.1.0) Example: 42 (the 42nd week in the year)
Month
F A full textual representation of a month, such as January or March January to December
m Numeric representation of a month, with leading zeros 01 to 12
M A short textual representation of a month by  three letters Jan to Dec
n Numeric representation of a month, without leading zeros 1 to 12
t Number of days in the given month 28 to 31
Year
L Whether it’s a leap year 1 if it is a leap year, 0otherwise.
o ISO-8601 year number. This has the same value as Y, except that if the ISO week number (W) belongs to the previous or next year, that year is used instead. (added in PHP 5.1.0) Examples: 1999 or 2003
Y A full numeric representation of a year, 4 digits Examples: 1999 or2003
y A two digit representation of a year Examples: 99 or 03
Time
a Lowercase Ante meridiem and Post meridiem am or pm
A Uppercase Ante meridiem and Post meridiem AM or PM
B Swatch Internet time 000 to 999
g 12-hour format of an hour without leading zeros 1 to 12
G 24-hour format of an hour without leading zeros 0 to 23
h 12-hour format of an hour with leading zeros 01 to 12
H 24-hour format of an hour with leading zeros 00 to 23
i Minutes with leading zeros 00 to 59
s Seconds, with leading zeros 00 to 59
u Microseconds (added in PHP 5.2.2). Note that date() will always generate 000000 since it takes an integer parameter, whereas DateTime::format() does support microseconds. Example: 654321
Timezone
e Timezone identifier (added in PHP 5.1.0) Examples: UTCGMT,Atlantic/Azores
I (capital i) Whether or not the date is in daylight saving time 1 if Daylight Saving Time, 0 otherwise.
O Difference to Greenwich time (GMT) in hours Example: +0200
P Difference to Greenwich time (GMT) with colon between hours and minutes (added in PHP 5.1.3) Example: +02:00
T Timezone abbreviation Examples: ESTMDT …
Z Timezone offset in seconds. The offset for timezones west of UTC is always negative, and for those east of UTC is always positive. -43200 through 50400
Full Date/Time
c ISO 8601 date (added in PHP 5) 2004-02-12T15:19:21+00:00
r » RFC 2822 formatted date Example: Thu, 21 Dec 2000 16:01:07 +0200
U Seconds since the Unix Epoch (January 1 1970 00:00:00 GMT) See also time()

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