Edit report at https://bugs.php.net/bug.php?id=19914&edit=1
ID: 19914
Comment by: beakerboy99 at yahoo dot com
Reported by: jsb17 at NOSPAMcornell dot edu
Summary: October 27 2002 spans 90000 seconds. 1:00AM -
1:59AM are not unique times.
Status: Bogus
Type: Bug
Package: Date/time related
Operating System: Windows 98
PHP Version: 4.2.3
Block user comment: N
Private report: N
New Comment:
I had found a similar "bug" with 2007-11-04 after pulling my hair out trying to
find whay a URL link wasn't incrementing properly. I found the 90000 seconds
thing, and then figured out it's due to daylight savings time and the extra
hour from setting the clocks back.
Previous Comments:
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[2002-10-15 03:28:34] der...@php.net
We are happy to tell you that you just discovered Daylight Savings
Time. For more information see:
http://webexhibits.org/daylightsaving/b.html
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[2002-10-15 03:26:29] jsb17 at NOSPAMcornell dot edu
To whom it may concern,
I noticed you have another October date bug pending, but it was in spanish, and
I don't understand it.
I believe this is a bug: October 27, 2002 spans 90000 seconds, rather than
86400. Please let me know if I am incorrect.
I have isolated the bug on a page on my server:
http://68.50.50.189/wp_test_stuff/bug.php
"01:00 am 27 Oct 2002" appears twice in the list.
Here is the code used to produce this page:
<?php
// timestamps are 90000 seconds apart
$debug_seven = mktime(0,0,0,10,27,2002);
echo "10-27-2002 timestamp: $debug_seven<br>";
$debug_eight = mktime(0,0,0,10,28,2002);
echo "10-28-2002 timestamp: $debug_eight<p>";
//begin on october 27, 2002, and increment every hour
for ($ts=1035702000; $ts <= 1035792000; $ts+=3600){
echo "<br>" . date("h:i a d M Y", $ts);
}
echo "<P><HR><P>";
phpinfo();
echo "<hr>$HTTP_USER_AGENT\n";
?>
If this is a bug, I hope you are able to spend less time fixing it than I spent
isolating it.
I received the error using a loop to cycle through consecutive days by
incrementing my timestamp += 86400.
I have changed my code by using this time-expensive kludge, but it works:
// increment to the next day
$my_timestamp = mktime(0,0,0,
date("m",$my_timestamp),
date("d",$my_timestamp)+1,
date("Y",$my_timestamp));
I hope I have been clear. Thank you for your time in considering this. Please
remove the NOSPAM from my e-mail address when replying
-Jon
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Edit this bug report at https://bugs.php.net/bug.php?id=19914&edit=1
