PHP Date Functions

checkdate()

Validates a Gregorian date

date_add()

Adds days, months, years, hours, minutes, and seconds to a date

date_create_from_format()

Returns a new DateTime object formatted according to a specified format

date_create()

Returns a new DateTime object

date_date_set()

Sets a new date

date_default_timezone_get()

Returns the default timezone used by all date/time functions

date_default_timezone_set()

Sets the default timezone used by all date/time functions

date_diff()

Returns the difference between two dates

date_format()

Returns a date formatted according to a specified format

date_get_last_errors()

Returns the warnings/errors found in a date string

date_interval_create_from_date_string()

Sets up a DateInterval from the relative parts of the string

date_interval_format()

Formats the interval

date_isodate_set()

Sets the ISO date

date_modify()

Modifies the timestamp

date_offset_get()

Returns the timezone offset

date_parse_from_format()

Returns an associative array with detailed info about a specified date, according to a specified format

date_parse()

Returns an associative array with detailed info about a specified date

date_sub()

Subtracts days, months, years, hours, minutes, and seconds from a date

date_sun_info()

Returns an array containing info about sunset/sunrise and twilight begin/end, for a specified day and location

date_sunrise()

Returns the sunrise time for a specified day and location

date_sunset()

Returns the sunset time for a specified day and location

date_time_set()

Sets the time

date_timestamp_get()

Returns the Unix timestamp

date_timestamp_set()

Sets the date and time based on a Unix timestamp

date_timezone_get()

Returns the time zone of the given DateTime object

date_timezone_set()

Sets the time zone for the DateTime object

date()

Formats a local date and time

getdate()

Returns date/time information of a timestamp or the current local date/time

gettimeofday()

Returns the current time

gmdate()

Formats a GMT/UTC date and time

gmmktime()

Returns the Unix timestamp for a GMT date

gmstrftime()

Formats a GMT/UTC date and time according to locale settings

idate()

Formats a local time/date as integer

localtime()

Returns the local time

microtime()

Returns the current Unix timestamp with microseconds

mktime()

Returns the Unix timestamp for a date

strftime()

Formats a local time and/or date according to locale settings

strptime()

Parses a time/date generated with strftime()

strtotime()

Parses an English textual datetime into a Unix timestamp

time()

Returns the current time as a Unix timestamp