Date and Time
- Introduction
 - Installing/Configuring
 - Predefined Constants
 - DateTime — The DateTime class
- DateTime::add — Adds an amount of days, months, years, hours, minutes and seconds to a DateTime object
 - DateTime::__construct — Returns new DateTime object
 - DateTime::createFromFormat — Returns new DateTime object formatted according to the specified format
 - DateTime::diff — Returns the difference between two DateTime objects
 - DateTime::format — Returns date formatted according to given format
 - DateTime::getLastErrors — Returns the warnings and errors
 - DateTime::getOffset — Returns the timezone offset
 - DateTime::getTimestamp — Gets the Unix timestamp
 - DateTime::getTimezone — Return time zone relative to given DateTime
 - DateTime::modify — Alters the timestamp
 - DateTime::__set_state — The __set_state handler
 - DateTime::setDate — Sets the date
 - DateTime::setISODate — Sets the ISO date
 - DateTime::setTime — Sets the time
 - DateTime::setTimestamp — Sets the date and time based on an Unix timestamp
 - DateTime::setTimezone — Sets the time zone for the DateTime object
 - DateTime::sub — Subtracts an amount of days, months, years, hours, minutes and seconds from a DateTime object
 - DateTime::__wakeup — The __wakeup handler
 
 - DateTimeZone — The DateTimeZone class
- DateTimeZone::__construct — Creates new DateTimeZone object
 - DateTimeZone::getLocation — Returns location information for a timezone
 - DateTimeZone::getName — Returns the name of the timezone
 - DateTimeZone::getOffset — Returns the timezone offset from GMT
 - DateTimeZone::getTransitions — Returns all transitions for the timezone
 - DateTimeZone::listAbbreviations — Returns associative array containing dst, offset and the timezone name
 - DateTimeZone::listIdentifiers — Returns numerically index array with all timezone identifiers
 
 - DateInterval — The DateInterval class
- DateInterval::__construct — Creates new DateInterval object
 - DateInterval::createFromDateString — Sets up a DateInterval from the relative parts of the string
 - DateInterval::format — Formats the interval
 
 - DatePeriod — The DatePeriod class
- DatePeriod::__construct — Creates new DatePeriod object
 
 - Date/Time Functions
- checkdate — Validate a Gregorian date
 - date_add — Alias of DateTime::add
 - date_create_from_format — Alias of DateTime::createFromFormat
 - date_create — Alias of DateTime::__construct
 - date_date_set — Alias of DateTime::setDate
 - 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_diff — Alias of DateTime::diff
 - date_format — Alias of DateTime::format
 - date_get_last_errors — Alias of DateTime::getLastErrors
 - date_interval_create_from_date_string — Alias of DateInterval::createFromDateString
 - date_interval_format — Alias of DateInterval::format
 - date_isodate_set — Alias of DateTime::setISODate
 - date_modify — Alias of DateTime::modify
 - date_offset_get — Alias of DateTime::getOffset
 - date_parse_from_format — Get info about given date formatted according to the specified format
 - date_parse — Returns associative array with detailed info about given date
 - date_sub — Alias of DateTime::sub
 - 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 — Alias of DateTime::setTime
 - date_timestamp_get — Alias of DateTime::getTimestamp
 - date_timestamp_set — Alias of DateTime::setTimestamp
 - date_timezone_get — Alias of DateTime::getTimezone
 - date_timezone_set — Alias of DateTime::setTimezone
 - 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 — Alias of DateTimeZone::listAbbreviations
 - timezone_identifiers_list — Alias of DateTimeZone::listIdentifiers
 - timezone_location_get — Alias of DateTimeZone::getLocation
 - timezone_name_from_abbr — Returns the timezone name from abbreviation
 - timezone_name_get — Alias of DateTimeZone::getName
 - timezone_offset_get — Alias of DateTimeZone::getOffset
 - timezone_open — Alias of DateTimeZone::__construct
 - timezone_transitions_get — Alias of DateTimeZone::getTransitions
 - timezone_version_get — Gets the version of the timezonedb
 
 - Supported Date and Time Formats
 - List of Supported Timezones