createFromFormat() weird output with format 'Y-m' in february

[Mehdimed]

Hello,

I encountered an issue with the following code:

echo Carbon::createFromFormat('Y-m', '2023-02');

Carbon version: 2.72.2

PHP version: 8.2

https://play.phpsandbox.io/nesbot/carbon?version=3.0.0.0-beta3&input=%3C%3Fphp%0A%0Aecho%20Carbon%3A%3AcreateFromFormat(%27Y-m%27%2C%20%272023-02%27)%3B

I expected to get:

2023-02-28 12:14:58

But I actually get:

2023-03-03 12:14:58

i'm trying to guess what's going on here, by default the createFromFormat() method when used with the 'Y-m' format, will add 30 or 31 as days and as there's only 28 days in february , the date become march the 3rd or march the 2nd during leap year.

Thanks!

(I haven't time to check if this issue has already been opened , and sorry if it's normal behavior and just me that did not read correctly the documentation)

[kylekatarnls]

Hello,

This behavior is directly inherited from DateTime::createFromFormat('Y-m', '2023-02')

Use '!Y-m' to reset the day (see PHP doc for operator explanation: https://www.php.net/manual/en/datetimeimmutable.createfromformat.php)

Duplicates #1003 (comment)