Bug #61642 [Opn]: modify("+5 weekdays") returns Sunday
Edit report at https://bugs.php.net/bug.php?id=61642&edit=1
ID: 61642
User updated by: jeff at nd4c dot com
Reported by: jeff at nd4c dot com
Summary: modify("+5 weekdays") returns Sunday
Status: Open
Type: Bug
Package: Date/time related
Operating System: Fedora 14 and Windows 7
PHP Version: Irrelevant
Block user comment: N
Private report: N
New Comment:
The documentation is at:
http://www.php.net/manual/en/datetime.formats.relative.php
That page is linked to from:
http://www.php.net/manual/en/datetime.formats.php
Which is linked to from:
http://www.php.net/manual/en/datetime.modify.php
Previous Comments:
------------------------------------------------------------------------
[2012-04-11 15:56:41] zhanglijiu at gmail dot com
I check the php manual, there is no weekdays parameter for modify. So you have to
use modify(+ n day) or modify(+ n week).
------------------------------------------------------------------------
[2012-04-05 18:01:12] jeff at nd4c dot com
Description:
------------
Tested on Windows 7:
Apache/2.2.16 (Win32) PHP/5.3.5
Tested on Fedora 14:
Fedora release 14 (Laughlin) Linux 2.6.35.4-rscloud x86_64
php.x86_64 5.3.8-3.fc14
These are the latest stable versions I can find for these two systems. (Especially since V6
binaries are no longer available for Windows.)
The Linux system is a live server using a framework that has not been tested with any later versions
than 5.3.8
When modifying a DateTime instance with "+5 weekdays" it will return a date for a Sunday
and not a weekday.
Running the Test script you note that the section for "5" returns Sunday. All the other
numbers are correct. Note the pattern for skipping the weekends is always for Friday, Saturday and
Sunday. However for "+5" weekends should be skipped for Saturday, Sunday and Monday,
which is different than for any other number.
Test script:
---------------
$days = array(1,2,3,4,5,6,7,8,);
$dates =
array('2012-03-29','2012-03-30','2012-03-31','2012-04-01','2012-04-02','2012-04-03','2012-04-04','2012-04-05',);
foreach ($days as $businessdays)
{
foreach ($dates as $startdate)
{
$start = new DateTime($startdate);
$date = new DateTime($startdate);
echo '<br/>'.$businessdays.' : '.$date->format('l').'
: '.$date->format('Y-m-d');
$date->modify("+{$businessdays} weekdays");
echo ' : '.$date->format('Y-m-d').' :
'.$date->format('l');
}
echo '<br/>';
}
Expected result:
----------------
...
5 : Thursday : 2012-03-29 : 2012-04-05 : Thursday
5 : Friday : 2012-03-30 : 2012-04-06 : Friday
5 : Saturday : 2012-03-31 : 2012-04-09 : Monday
5 : Sunday : 2012-04-01 : 2012-04-09 : Monday
5 : Monday : 2012-04-02 : 2012-04-09 : Monday
5 : Tuesday : 2012-04-03 : 2012-04-10 : Tuesday
5 : Wednesday : 2012-04-04 : 2012-04-11 : Wednesday
5 : Thursday : 2012-04-05 : 2012-04-12 : Thursday
...
Actual result:
--------------
...
5 : Thursday : 2012-03-29 : 2012-04-05 : Thursday
5 : Friday : 2012-03-30 : 2012-04-08 : Sunday
5 : Saturday : 2012-03-31 : 2012-04-08 : Sunday
5 : Sunday : 2012-04-01 : 2012-04-08 : Sunday
5 : Monday : 2012-04-02 : 2012-04-09 : Monday
5 : Tuesday : 2012-04-03 : 2012-04-10 : Tuesday
5 : Wednesday : 2012-04-04 : 2012-04-11 : Wednesday
5 : Thursday : 2012-04-05 : 2012-04-12 : Thursday
...
------------------------------------------------------------------------
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Edit this bug report at https://bugs.php.net/bug.php?id=61642&edit=1
Thread (4 messages)