DateTime.ymd
Description:
Creates a new DateTime using the date and times in the gregorian calendar in the local timezone.
year should be from 1 to 9999, month should be from 1 to 12, day from 1 to 31.
If value is -1 then all over value will be ignored. For example if month == -1, then
DateTime will created only for year. If day == -1, then
DateTime will created for year and month and so on.
Parameters:
| year |
the gregorian year |
| month |
the gregorian month |
| day |
the day of the gregorian month |
Returns:
|
the newly created DateTime, or null on error. |