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Request #45509 create_date_from_format() cannot parse negative (BC) dates
Submitted: 2008-07-14 13:29 UTC Modified: 2015-08-28 01:11 UTC
Votes:6
Avg. Score:4.2 ± 0.9
Reproduced:3 of 3 (100.0%)
Same Version:2 (66.7%)
Same OS:1 (33.3%)
From: tj at systisoft dot com Assigned: derick (profile)
Status: Assigned Package: Date/time related
PHP Version: 5.3CVS-2008-11-11 OS: *
Private report: No CVE-ID: None
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 [2008-07-14 13:29 UTC] tj at systisoft dot com
Description:
------------
While the constructor of DateTime can handle negaive dates (BC dates), create_date_from_format cannot.

Reproduce code:
---------------
$d = new DateTime("-4000-01-31"); echo $d->format("Y-m-d"), PHP_EOL;
$d = date_create_from_format("Y-m-d", "4000-01-31"); echo $d->format("Y-m-d"), PHP_EOL;
$d = date_create_from_format("Y-m-d", "-4000-01-31"); echo $d->format("Y-m-d"), PHP_EOL;

Expected result:
----------------
-4000-01-31
4000-01-31
-4000-01-31

Actual result:
--------------
-4000-01-31
4000-01-31
PHP Fatal error:  Call to a member function format() on a non-object in Command line code on line 3

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 [2015-08-28 01:11 UTC] cmb@php.net
-Type: Bug +Type: Feature/Change Request
 [2015-08-28 01:11 UTC] cmb@php.net
Well, the "Y" format specifier expects a four-digit year – so
actually this is not a bug. I'm changing to feature request.
 
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