Fail to create new datetime with value '0000-00-00'

[jotajimenezc]

From manual page: https://php.net/class.datetime

when we create a new variable with value '0000-00-00' the variable get a wrong value

DateTime Object
(
[date] => -0001-11-30 00:00:00.000000
[timezone_type] => 3
[timezone] => Europe/Berlin
)

[damianwadley]

Do you think 0000-00-00 is a valid date?

[jotajimenezc]

Its a default value for SQL databases, but When you try to set a value -0001 you cant insert it El vie., 10 dic. 2021 8:22, Damian Wadley ***@***.***> escribió:

…

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[damianwadley]

0000-00-00 is not a valid date, but PHP will do its best to transform it into a valid date. The result is -0001-11-30.
MySQL only supports dates from 1000-01-01 to 9999-12-31, so it will not support year -0001 (and also not support year 0001).

If you want to use DateTime then you need to make sure the date is not 0000-00-00 first. You'll need to think about what your code should do if it receives that value: what does it mean, and can you use it as a real date, and how should you display it to a user?

Or instead, I suggest you should use NULL and not the default date. Then your PHP values will always be either nulls or valid DateTimes.