In PHP, the full name of dt is "Date/Time", which refers to the "Date/Time" series of functions and is a core component of PHP; the "Date/Time" function allows users to run servers from PHP scripts Get the date and time and format the date and time in different ways.
The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer
In php, the full name of dt is "Date/Time ”, is an integral part of the core of PHP. No installation is required to use these functions.
Date/Time allows you to get the date and time from the server the PHP script is running on. You can use the Date/Time functions to format dates and times in different ways.
Note: These functions rely on the local settings of the server. Remember to take daylight saving time and leap years into account when using these functions.
| Function | Description |
|---|---|
| checkdate() | Verifies the Gregorian date. |
| date_add() | Add day, month, year, hour, minute and second to a date. |
| date_create_from_format() | Returns a new DateTime object formatted according to the specified format. |
| date_create() | Returns a new DateTime object. |
| date_date_set() | Set a new date. |
| date_default_timezone_get() | Returns the default time zone, used by all Date/Time functions. |
| date_default_timezone_set() | Set the default time zone, used by all Date/Time functions. |
| date_diff() | Returns the difference between two dates. |
| date_format() | Returns the date formatted according to the specified format. |
| date_get_last_errors() | Returns warnings/errors in the date string. |
| date_interval_create_from_date_string() | Creates a DateInterval from the relevant part of the string. |
| date_interval_format() | Format time interval. |
| date_isodate_set() | Set ISO date. |
| date_modify() | Modify the timestamp. |
| date_offset_get() | Returns the time zone offset. |
| date_parse_from_format() | Returns an associative array with details of the specified date according to the specified format. |
| date_parse() | Returns an associative array with details for the specified date. |
| date_sub() | Subtract the day, month, year, hours, minutes, and seconds from the specified date. |
| date_sun_info() | Returns an array containing information about sunrise/sunset and dusk start/dusk end for the specified date and location. |
| date_sunrise() | Returns the sunrise time of the specified date and location. |
| date_sunset() | Returns the sunset time of the specified date and location. |
| date_time_set() | Set 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() | Set the time zone of the DateTime object. |
| date() | Format local date and time. |
| getdate() | Returns the date/time information of a timestamp or the current local date/time. |
| gettimeofday() | Returns the current time. |
| gmdate() | Format GMT/UTC date and time. |
| gmmktime() | Returns the UNIX timestamp of the GMT date. |
| gmstrftime() | Format GMT/UTC date and time according to locale settings. |
| idate() | Format local time/date as an integer. |
| localtime() | Returns the local time. |
| microtime() | Returns the number of microseconds in the current Unix timestamp. |
| mktime() | Returns the Unix timestamp of a date. |
| strftime() | Format local time/date according to locale settings. |
| strptime() | Parse the time/date generated by strftime(). |
| strtotime() | Parses any English text date or time description into a Unix timestamp. |
| time() | Returns the Unix timestamp of the current time. |
| timezone_abbreviations_list() | Returns an associative array containing daylight saving time, offset, and time zone name. |
| timezone_identifiers_list() | Returns a numeric array with all time zone identifiers. |
| timezone_location_get() | Returns the location information of the specified time zone. |
| timezone_name_from_ abbr() | Returns the time zone name based on the time zone abbreviation. |
| timezone_name_get() | Returns the name of the time zone. |
| timezone_offset_get() | Returns the time zone offset relative to GMT. |
| timezone_open() | Create a new DateTimeZone object. |
| timezone_transitions_get() | Returns all transitions for time zones. |
| timezone_version_get() | Returns the version of the time zone database. |
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