#20382 [Opn->Fbk]: strtotime ("Monday", $date) can produce incorrect output
ID: 20382 Updated by: [EMAIL PROTECTED] Reported By: nickj-phpbugs at nickj dot org -Status: Open +Status: Feedback Bug Type: Date/time related Operating System: * PHP Version: 4CVS, 5CVS New Comment: Can you please give a simpler test? (I somehow have a feeling your script is buggy, not PHP) Previous Comments: [2004-04-08 01:39:23] nickj-phpbugs at nickj dot org It appears that this problem has not been resolved. I've downloaded the latest Stable Win32 package snapshot from http://snaps.php.net/ , in particular this one: http://snaps.php.net/win32/php4-win32-STABLE-200404080430.zip [I.e. from roughly 5 after this bug was closed] Then I've run the test script on it from an above comment. This produces the following results: == I:\new downloads\just downloaded\php4-win32-STABLE-200404080430>php bug-20382-test.php Content-type: text/html X-Powered-By: PHP/4.3.6RC3-dev Discrepancy for 2002-3-26 - results were 2002-3-31 vs 2002-4-1 Discrepancy for 2002-3-27 - results were 2002-3-31 vs 2002-4-1 Discrepancy for 2002-3-28 - results were 2002-3-31 vs 2002-4-1 Discrepancy for 2002-3-29 - results were 2002-3-31 vs 2002-4-1 Discrepancy for 2002-3-30 - results were 2002-3-31 vs 2002-4-1 Discrepancy for 2002-3-31 - results were 2002-3-31 vs 2002-4-1 Discrepancy for 2003-3-25 - results were 2003-3-30 vs 2003-3-31 Discrepancy for 2003-3-26 - results were 2003-3-30 vs 2003-3-31 Discrepancy for 2003-3-27 - results were 2003-3-30 vs 2003-3-31 Discrepancy for 2003-3-28 - results were 2003-3-30 vs 2003-3-31 Discrepancy for 2003-3-29 - results were 2003-3-30 vs 2003-3-31 Discrepancy for 2003-3-30 - results were 2003-3-30 vs 2003-3-31 Discrepancy for 2004-3-23 - results were 2004-3-28 vs 2004-3-29 Discrepancy for 2004-3-24 - results were 2004-3-28 vs 2004-3-29 Discrepancy for 2004-3-25 - results were 2004-3-28 vs 2004-3-29 Discrepancy for 2004-3-26 - results were 2004-3-28 vs 2004-3-29 Discrepancy for 2004-3-27 - results were 2004-3-28 vs 2004-3-29 Discrepancy for 2004-3-28 - results were 2004-3-28 vs 2004-3-29 Discrepancy for 2005-3-22 - results were 2005-3-27 vs 2005-3-28 Discrepancy for 2005-3-23 - results were 2005-3-27 vs 2005-3-28 Discrepancy for 2005-3-24 - results were 2005-3-27 vs 2005-3-28 Discrepancy for 2005-3-25 - results were 2005-3-27 vs 2005-3-28 Discrepancy for 2005-3-26 - results were 2005-3-27 vs 2005-3-28 Discrepancy for 2005-3-27 - results were 2005-3-27 vs 2005-3-28 Discrepancy for 2006-3-21 - results were 2006-3-26 vs 2006-3-27 Discrepancy for 2006-3-22 - results were 2006-3-26 vs 2006-3-27 Discrepancy for 2006-3-23 - results were 2006-3-26 vs 2006-3-27 Discrepancy for 2006-3-24 - results were 2006-3-26 vs 2006-3-27 Discrepancy for 2006-3-25 - results were 2006-3-26 vs 2006-3-27 Discrepancy for 2006-3-26 - results were 2006-3-26 vs 2006-3-27 Discrepancy for 2007-3-20 - results were 2007-3-25 vs 2007-3-26 Discrepancy for 2007-3-21 - results were 2007-3-25 vs 2007-3-26 Discrepancy for 2007-3-22 - results were 2007-3-25 vs 2007-3-26 Discrepancy for 2007-3-23 - results were 2007-3-25 vs 2007-3-26 Discrepancy for 2007-3-24 - results were 2007-3-25 vs 2007-3-26 Discrepancy for 2007-3-25 - results were 2007-3-25 vs 2007-3-26 PHP version: 4.3.6RC3-dev == What I would expect to happen is that there would not be any discrepancies. The fact there are discrepancies indicates to me that this problem is still unresolved. I understand that there have been two date-related problems solved recently (#27719 and #27780), but whatever updates were made for those problems do not appear to have fixed this problem. [2004-04-03 09:10:33] [EMAIL PROTECTED] This bug has been fixed in CVS. Snapshots of the sources are packaged every three hours; this change will be in the next snapshot. You can grab the snapshot at http://snaps.php.net/. Thank you for the report, and for helping us make PHP better. [2003-04-06 18:47:03] scottmacvicar at ntlworld dot com This is a DST problem by the looks of it. The specific dates mentioned are when DST takes effect which is the last sunday in March. [2002-11-12 19:46:28] nickj-phpbugs at nickj dot org OK, I decided that was needed was some kind of automated testing, so I wrote it: #!/root/php4-200211122230 -q 7, "Monday" => 1, "Tuesday" => 2, "Wednesday" => 3, "Thursday" => 4, "Friday" => 5, "Saturday" => 6); // convert into a number $desired_day_of_week_number = $wee
#20382 [Opn->Fbk]: strtotime ("Monday", $date) can produce incorrect output
ID: 20382
Updated by: [EMAIL PROTECTED]
Reported By: [EMAIL PROTECTED]
-Status: Open
+Status: Feedback
Bug Type: Date/time related
Operating System: Linux Mandrake 7.2
PHP Version: 4.2.3
New Comment:
Please try using this CVS snapshot:
http://snaps.php.net/php4-latest.tar.gz
For Windows:
http://snaps.php.net/win32/php4-win32-latest.zip
Your script produces the expected dates for me with latest CVS
snapshot. Please give try it out.
Previous Comments:
[2002-11-12 02:11:16] [EMAIL PROTECTED]
Strtotime() appears to produce incorrect output under some
circumstances - specifically when wanting the date of a particular day
of the week day of the week from a given starting date. For example,
using 2001-3-20 as a starting point, we want the date for the next
Monday. The correct answer is the 26th, but the result produced is the
25th (a Sunday). The correct result is given sometimes, so this appears
to depend on the input.
A sample script to illustrate:
===
#!/root/php-4.2.3 -q
\n";
print "from 2001-3-17, goto monday: " .
getDateWithModifier("2001-3-17", "Monday") . "; should be
2001-3-19.\n";
print "from 2001-3-18, goto monday: " .
getDateWithModifier("2001-3-18", "Monday") . "; should be
2001-3-19.\n";
print "from 2001-3-19, goto monday: " .
getDateWithModifier("2001-3-19", "Monday") . "; should be
2001-3-19.\n";
print "from 2001-3-20, goto monday: " .
getDateWithModifier("2001-3-20", "Monday") . "; should be 2001-3-26
###.\n";
print "from 2001-3-21, goto monday: " .
getDateWithModifier("2001-3-21", "Monday") . "; should be 2001-3-26
###.\n";
print "from 2001-3-22, goto monday: " .
getDateWithModifier("2001-3-22", "Monday") . "; should be 2001-3-26
###.\n";
print "from 2001-3-23, goto monday: " .
getDateWithModifier("2001-3-23", "Monday") . "; should be 2001-3-26
###.\n";
print "from 2001-3-24, goto monday: " .
getDateWithModifier("2001-3-24", "Monday") . "; should be 2001-3-26
###.\n";
print "from 2001-3-25, goto monday: " .
getDateWithModifier("2001-3-25", "Monday") . "; should be 2001-3-26
###.\n";
print "from 2001-3-26, goto monday: " .
getDateWithModifier("2001-3-26", "Monday") . "; should be
2001-3-26.\n";
print "from 2001-3-27, goto monday: " .
getDateWithModifier("2001-3-27", "Monday") . " ; should be
2001-4-2.\n";
print "\n";
print "PHP version: " . phpversion(). "\n";
?>
===
Produces this output:
===
[root@www tmp]# ./script.php
from 2001-3-17, goto monday: 2001-3-19; should be 2001-3-19.
from 2001-3-18, goto monday: 2001-3-19; should be 2001-3-19.
from 2001-3-19, goto monday: 2001-3-19; should be 2001-3-19.
from 2001-3-20, goto monday: 2001-3-25; should be 2001-3-26 ###.
from 2001-3-21, goto monday: 2001-3-25; should be 2001-3-26 ###.
from 2001-3-22, goto monday: 2001-3-25; should be 2001-3-26 ###.
from 2001-3-23, goto monday: 2001-3-25; should be 2001-3-26 ###.
from 2001-3-24, goto monday: 2001-3-25; should be 2001-3-26 ###.
from 2001-3-25, goto monday: 2001-3-25; should be 2001-3-26 ###.
from 2001-3-26, goto monday: 2001-3-26; should be 2001-3-26.
from 2001-3-27, goto monday: 2001-4-2 ; should be 2001-4-2.
PHP version: 4.2.3
[root@www tmp]#
Expected output: The 6 lines with "###" are expected to produce the
indicated output, but do not.
Problem was noticed today in PHP 4.06, and then verified as being
reproducible in PHP 4.2.3 (same output).
PHP 4.2.3 configured with:
./configure --with-mysql --enable-xml --enable-wddx
--
Edit this bug report at http://bugs.php.net/?id=20382&edit=1
