Doc #79685 [Opn->Dup]: createFromFormat doesn't work easily with unpadded components
Edit report at https://bugs.php.net/bug.php?id=79685&edit=1
ID: 79685
Updated by: requinix@php.net
Reported by: contact at eslistavenga dot nl
Summary: createFromFormat doesn't work easily with unpadded
components
-Status: Open
+Status: Duplicate
Type: Documentation Problem
Package: Date/time related
Operating System: Linux
PHP Version: 7.4.6
Block user comment: N
Private report: N
New Comment:
Closing in favor of https://github.com/php/php-src/issues/7834
Previous Comments:
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[2020-06-10 11:21:08] requinix@php.net
The docs should explain in a little more detail about how the parser tries to handle this sort of
situation. As when happens with other date strings in PHP, 'G' will not match *only* 0-23
but will support anything up to 99 and then overflow the date if you go too high. When the docs say
1 or 2 digits, that means it will consume one digit at a minimum and then consume the next if
it's a digit as well. It will *not* stop at one digit just because the digit was 3-9, *nor*
will it backtrack if it matches '2' then 4-9.
So 'G' is taking '71' (which would result in overflow), thus leaving the
's' one digit short, causing the parsing to fail.
Moral of the story is that you should always use padded numbers in your computer-friendly date
strings.
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[2020-06-10 09:02:46] contact at eslistavenga dot nl
Description:
------------
When using the DateTime format ymdGis without any formatting, like hour/minute/second separator, the
method will throw an error. See code example below. The method expects a leading 0, even tho the
hour format 'G' was used and not 'H'
Test script:
---------------
<?php
//won't work
$date = DateTime::createFromFormat('ymdGis', '20061071018');
var_dump($date); //false
var_dump(DateTime::getLastErrors());
//will work
$date = DateTime::createFromFormat('ymdG-is', '2006107-1018');
var_dump($date); //DateTime::object
var_dump(DateTime::getLastErrors());
Expected result:
----------------
A valid DateTime object
Actual result:
--------------
false
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Edit this bug report at https://bugs.php.net/bug.php?id=79685&edit=1
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