ID: 40271
User updated by: slomo at sonarkollektiv dot de
Reported By: slomo at sonarkollektiv dot de
Status: Open
Bug Type: Date/time related
Operating System: Mac OS X 10.4.8
PHP Version: 5.2.0
New Comment:
Just to point out why I think somethings weird, compare the
previous code and result to this one.
code:
strtotime('2000-01-04 UTC + 1 week last monday');
strtotime('2000-01-11 UTC + 0 week last monday');
actual result:
947462400
947462400
expected result:
947462400
947462400
> same value, fine.
And the same for
code:
strtotime('2000-01-04 UTC + 0 week last monday');
strtotime('2000-01-04 UTC + 1 week last monday');
strtotime('2000-01-04 UTC + 2 week last monday');
actual result:
946857600
947462400
948067200
expected result:
946857600
947462400
948067200
> always the same gap (604800 is a week), fine.
Previous Comments:
------------------------------------------------------------------------
[2007-01-29 12:22:42] slomo at sonarkollektiv dot de
code :
strtotime('1999-01-04 UTC + 1 week last monday');
strtotime('1999-01-11 UTC + 0 week last monday');
actual result:
916012800
915408000
expected result:
at least the same value
Another example
code :
strtotime('1999-01-04 UTC + 0 week last monday');
strtotime('1999-01-04 UTC + 1 week last monday');
strtotime('1999-01-04 UTC + 2 week last monday');
actual result:
914803200
916012800
916617600
expected result:
at least always the same gap (604800 is a week), but it
differs
------------------------------------------------------------------------
[2007-01-29 12:02:37] slomo at sonarkollektiv dot de
thanks [EMAIL PROTECTED], that's brilliant :)
and it seems to be bug free. I still think my code produced a
bug in PHP and I do not get why this happens.
------------------------------------------------------------------------
[2007-01-29 12:01:58] [EMAIL PROTECTED]
Could you please just paste something like this:
code :
strftime("<something>")
actual result:
<something you can actually see>
expected result:
<something you expected to see>
I really don't think those functions, cycles and HTML output are
required to demonstrate a problem with strftime().
------------------------------------------------------------------------
[2007-01-29 11:55:33] slomo at sonarkollektiv dot de
My "Reproduce code" was quite complete. Here it is again,
this time it starts with <?php and ends with ?> :-)
I expect: using strtotime("last monday") should behave
always the same. If you run my code you will see that it
differs depending on the given date. My code is not complex,
so I hope you get the point very soon.
This "Day of week items" are a little bit confusing, because
if you have e.g. a $date for a monday and state strtotime
("$date last monday"), you get $date. I assume this is
correct.
Anyway I would think it's just my fault if my function would
be "off 1 week" for the whole year if the date is a monday
every time. But this happens only for the first week, in any
other week the result is like I learned strtotime() is doing
it.
Can you follow?
<?php
function MondayOfWeek($year, $week) {
return strtotime("$year-01-04 UTC + " . ($week-1) . '
week last monday');
}
for ($y = 1998; $y < 2012; $y++) {
for ($w = 1; $w < 53; $w++) {
$start = MondayOfWeek($y, $w);
$end = strtotime("+6 day", $start);
echo "KW $w/$y: " . gmstrftime('%A, %x %X', $start)
. ' - ' . gmstrftime('%A, %x %X', $end) . ' - reverse check
(week/year): ' . gmstrftime('%V/%G', $start) . "<br />\n";
if ($w != gmstrftime('%V', $start) || $y !=
gmstrftime('%G', $start)) {
echo '<span style="color: red;">Oops,
EXCEPTIONAL ERROR!</span>' . "<br />\n";
}
}
echo "<hr>\n";
}
?>
best regards,
slomo
------------------------------------------------------------------------
[2007-01-29 11:50:06] [EMAIL PROTECTED]
You can also just use "strtotime('2007W011')"; for Monday "1", of Week
1 ("01") of year 2007 ("2007").
------------------------------------------------------------------------
The remainder of the comments for this report are too long. To view
the rest of the comments, please view the bug report online at
http://bugs.php.net/40271
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Edit this bug report at http://bugs.php.net/?id=40271&edit=1
