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

go to bug id or search bugs for

Bug #21572 date gives 0 as a week number of year
Submitted: 2003-01-10 16:14 UTC Modified: 2003-01-10 19:00 UTC
Votes:1
Avg. Score:3.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:1 (100.0%)
Same OS:1 (100.0%)
From: trio at surffi dot saunalahti dot fi Assigned:
Status: Not a bug Package: Date/time related
PHP Version: 4.2.2 OS: Redhat 8.0
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: trio at surffi dot saunalahti dot fi
New email:
PHP Version: OS:

 

 [2003-01-10 16:14 UTC] trio at surffi dot saunalahti dot fi 
I found out that date("W", $stamp) can gives a zero as output.


<?php
$stamp = time();

while( date("W", $stamp ) != 0 )
        $stamp+=5000;

print date( "d.m.Y H:i W", $stamp ) . " $stamp\n";
?>

Out could be for examble "01.01.2005 00:46 0 1104533193".


I check the ISO-8601 standard (version 2000-12-19
ISO/TC 154 N 362) and it says:

calendar week is represented by two decimal digits. The first calendar week of a year shall be identified as
[01] and subsequent weeks shall be numbered in ascending sequence.

Futhermore the date function should have a option for 'normally' week number of the year like most of people does it understand practically: 1.1.xxxx is 1 and so on and finally 31.12.xxxx is 52.

Patches

Pull Requests

History

AllCommentsChangesGit/SVN commitsRelated reports
 [2003-01-10 16:34 UTC] pollita@php.net 
Unable to reproduce with script given, output of date("W") is always >= 1 and <= 53.

(1) Could you try it with 4.3.0 and see if you get the same results?

(2) What timezone are you in?
 [2003-01-10 16:40 UTC] trio at surffi dot saunalahti dot fi 
1) I have not that kind of platform to use right know.

2) I am GMT +02:00 timezone.
 [2003-01-10 16:48 UTC] iliaa@php.net 
I cannot replicate this either, marking this as feedback until the user can test with 4.3.0 or later.
 [2003-01-10 16:50 UTC] trio at surffi dot saunalahti dot fi 
This is a function what php needs for option to date function:

function get_a_week( $timestamp )
{
	//Look the stamp for 1.1.xxxx 00:00:00 for current given stamp
	$seeking_stamp = mktime( 0, 0, 0, 1, 1, date( "Y", $timestamp ) );
	
	//Week numbers are 1-52 in practically
	for( $i=1; $i < 53; $i++ )
	{
		//Check if the passed stamp is between monday 00:00:00 and sunday 23:59:59
		if( $timestamp => $seeking_stamp and $aika <= (($seeking_stamp+=7*24*3600)-1) )
			return $i; //Found a week between 1-52
	}
	
	//Should never get here
	return -1;
}
 [2003-01-10 16:53 UTC] iliaa@php.net 
Sorry, but your problem does not imply a bug in PHP itself.  For a
list of more appropriate places to ask for help using PHP, please
visit http://www.php.net/support.php as this bug system is not the
appropriate forum for asking support questions. 

Thank you for your interest in PHP.
 [2003-01-10 19:00 UTC] pollita@php.net 
I should also point out that the behavior you describe in your function does NOT replicate the proper behavior of determining the ISO-8601 week number.
 
PHP Copyright © 2001-2025 The PHP Group
All rights reserved. 		Last updated: Sat Jul 12 11:01:32 2025 UTC