php.net |  support |  documentation |  report a bug |  advanced search |  search howto |  statistics |  random bug |  login

go to bug id or search bugs for

Bug #20048 mktime() returns -1 for dates < 1970
Submitted: 2002-10-23 14:23 UTC Modified: 2002-10-23 15:18 UTC
Votes:13
Avg. Score:4.7 ± 0.6
Reproduced:10 of 11 (90.9%)
Same Version:5 (50.0%)
Same OS:4 (40.0%)
From: jamie at hometownsports dot ca Assigned:
Status: Wont fix Package: Unknown/Other Function
PHP Version: 4.2.2 OS: RedHat Linux 7.3
Private report: No CVE-ID: None
View Developer Edit
Welcome back! If you're the original bug submitter, here's where you can edit the bug or add additional notes.
If you forgot your password, you can retrieve your password here.
Password:
Status:
Package:
Bug Type:
Summary:
From: jamie at hometownsports dot ca
New email:
PHP Version: OS:

 

 [2002-10-23 14:23 UTC] jamie at hometownsports dot ca 
glibc-2.2.5-34 and greater has been changed to return -1 for dates < 1970.  This used to work.  The problem exists with RedHat 7.3 and 8.0

echo (mktime(0, 0, 0, 1, 1, 1960));  // prints -1

Patches

Pull Requests

History

AllCommentsChangesGit/SVN commitsRelated reports
 [2002-10-23 14:26 UTC] jamie at hometownsports dot ca 
glibc-2.2.5-34 and greater has been changed to return -1 for dates < 1970.  This used to work.  The problem exists with RedHat 7.3 and 8.0

echo (mktime(0, 0, 0, 1, 1, 1960));  // prints -1
 [2002-10-23 15:18 UTC] hholzgra@php.net 
unix timestamp behavior for negative values is undefined

it *may* map to pre-1970 dates but there is no guarantee
whatsoever
 [2003-02-27 00:55 UTC] jlim at natsoft dot com dot my 
As a workaround, you can use the adodb_time library, that uses PHP code to calculate negative timestamps.

http://php.weblogs.com/adodb_date_time_library
 
PHP Copyright © 2001-2024 The PHP Group
All rights reserved. 		Last updated: Mon Oct 14 17:01:28 2024 UTC