Date and Time Functions
| Function | Returns | Description |
|---|---|---|
| checkdate(month, day, year) | Boolean | Verifies that the specified month, day, and year is a valid date. If it is a valid date then true is returned, otherwise false is returned. |
| date(format, [timestamp]) | String | Formats a date. If timestamp is not supplied then the current timestamp is used. |
| getdate(timestamp) | Array | Returns an array with date/time settings for the timestamp. |
| gettimeofday() | Array | Returns an array with settings for the current time. |
| gmdate(format, [timestamp], [minute], [second], [month], [day], [year], [is_dst]) | String | Returns the timestamp for the GMT time/date that corresponds to the local time. Any of the optional parameters that are not used are assumed to be the current time. |
| gmstrftime(format, [timestamp]) | String | Formats a GMT/CUT time/date according to the specified format. |
| microtime() | String | Returns a string containing the microseconds and seconds since the epoch. |
| mktime([hour], [minute], [second], [month], [day], [year], [is_dst]) | Integer | Returns the timestamp for the specified date. Any of the optional parameters not specified are assumed to be the current time. |
| strftime(format, [timestamp]) | String | Formats the local date/time according to the specified format. |
| time() | Integer | Returns a current timestamp. |
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