Calendar and Event Related Extensions
Introduction
Calendar and Event Related Extensions
PHP Manual

# Date and Time

- Introduction
- Installing/Configuring
  - Installation
  - Runtime Configuration
  - Resource Types
- Predefined Constants
- List of Supported Timezones
  - Africa
  - America
  - Antarctica
  - Arctic
  - Asia
  - Atlantic
  - Australia
  - Europe
  - Indian
  - Pacific
  - Others
- Date/Time Functions
  - checkdate — Validate a Gregorian date
  - date_add — Adds an amount of days, months, years, hours, minutes and seconds to a DateTime object
  - date_create — Returns new DateTime object
  - date_date_set — Sets the date
  - date_default_timezone_get — Gets the default timezone used by all date/time functions in a script
  - date_default_timezone_set — Sets the default timezone used by all date/time functions in a script
  - date_format — Returns date formatted according to given format
  - date_isodate_set — Sets the ISO date
  - date_modify — Alters the timestamp
  - date_offset_get — Returns the daylight saving time offset
  - date_parse — Returns associative array with detailed info about given date
  - date_sub — Subtracts an amount of days, months, years, hours, minutes and seconds from a DateTime object
  - date_sun_info — Returns an array with information about sunset/sunrise and twilight begin/end
  - date_sunrise — Returns time of sunrise for a given day and location
  - date_sunset — Returns time of sunset for a given day and location
  - date_time_set — Sets the time
  - date_timezone_get — Return time zone relative to given DateTime
  - date_timezone_set — Sets the time zone for the DateTime object
  - date — Format a local time/date
  - getdate — Get date/time information
  - gettimeofday — Get current time
  - gmdate — Format a GMT/UTC date/time
  - gmmktime — Get Unix timestamp for a GMT date
  - gmstrftime — Format a GMT/UTC time/date according to locale settings
  - idate — Format a local time/date as integer
  - localtime — Get the local time
  - microtime — Return current Unix timestamp with microseconds
  - mktime — Get Unix timestamp for a date
  - strftime — Format a local time/date according to locale settings
  - strptime — Parse a time/date generated with strftime
  - strtotime — Parse about any English textual datetime description into a Unix timestamp
  - time — Return current Unix timestamp
  - timezone_abbreviations_list — Returns associative array containing dst, offset and the timezone name
  - timezone_identifiers_list — Returns numerically index array with all timezone identifiers
  - timezone_name_from_abbr — Returns the timezone name from abbrevation
  - timezone_name_get — Returns the name of the timezone
  - timezone_offset_get — Returns the timezone offset from GMT
  - timezone_open — Returns new DateTimeZone object
  - timezone_transitions_get — Returns all transitions for the timezone

Calendar and Event Related Extensions
Introduction
Calendar and Event Related Extensions
PHP Manual