Doc #67921 [Opn->Csd]: createFromFormat allows overflow for 'H' and 'G' so 25-99 rolls to next day

Edit report at https://bugs.php.net/bug.php?id=67921&edit=1

 ID:                 67921
 Updated by:         [email protected]
 Reported by:        crazytonyi at gmail dot com
 Summary:            createFromFormat allows overflow for 'H' and 'G' so
                     25-99 rolls to next day
-Status:             Open
+Status:             Closed
 Type:               Documentation Problem
 Package:            Date/time related
 PHP Version:        5.5.16
 Block user comment: N
 Private report:     N

 New Comment:

Automatic comment on behalf of derickr
Revision: https://github.com/php/doc-en/commit/5267e13731a496c2a2544433ee02a5314e1391d6
Log: Fixed bug #67921: createFromFormat allows overflow for 'H' and 'G' so 25-99 rolls to next day


Previous Comments:
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[2020-08-03 22:40:35] thomas at landauer dot at

I just opened a related issue: https://bugs.php.net/bug.php?id=79926

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[2014-08-28 16:28:11] [email protected]

This is standard behavior for date functions: when the input matches the format constraints (eg, 'H' is a two-digit number) then numbers above and below the valid range will over-/underflow.
"100:00" isn't valid for "H:m" because the hour cannot be three digits.

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[2014-08-28 07:32:34] crazytonyi at gmail dot com

Description:
------------
When a value between 24 and 99 is in date/time string evaluated by DateTime:createFromFormat , it handles as valid and resulting object is Date + hours % 24 . So 36:00 is treated as date + 1 day 12:00

Expected Result:  Evaluates to false.

If this is by design, it should be very clearly documented. Since 100:00 returns false, this does not seem intentional.

Test script:
---------------
$time="30:29"; 
$date =  DateTime::createFromFormat("H:m", $time);
echo $date->format(DateTime::W3C);



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Edit this bug report at https://bugs.php.net/bug.php?id=67921&edit=1