Bug #14391: gmmktime, gmdate work incorrect

From: pilots@farlep.net Operating system: Windows 2000 Server PHP version: 4.0.6 PHP Bug Type: Date/time related Bug description: gmmktime, gmdate work incorrect Please see the code below. The comments are the result of running this code on my PC, (my GMT Offset = +2 hours = +7200 sec.) You may see that the mktime() and date() functions work correct, but gmmktime() returns wrong value in winter time (when it is not a daylight saving time), and gmdate returns wrong "Z" parameter. Note: this bug does not appear on UNIX systems. <? $df="d.m.Y - H:i:s (Z), I"; $t=mktime(0,0,0,1,2,1970); echo "<br><b>Make 02.01.1970 - 00:00:00 (Local):</b><br>", "Timestamp: $t<br>", // 79200 "GMT: ", gmdate($df,$t), "<br>", // 01.01.1970 - 22:00:00 (7200) "Local: ", date($df,$t), "<br>", // 02.01.1970 - 00:00:00 (7200) "----------------------------------------<br>"; $t=gmmktime(0,0,0,1,2,1970); echo "<br><b>Make 02.01.1970 - 00:00:00 (GMT):</b><br>", "Timestamp: $t<br>", // 82800 (Why !=86400 ?) "GMT: ", gmdate($df,$t), "<br>", // 01.01.1970 - 23:00:00 (7200) "Local: ", date($df,$t), "<br>", // 02.01.1970 - 01:00:00 (7200) "----------------------------------------<br>"; $t=mktime(0,0,0,7,20,1970); echo "<br><b>Make 20.07.1970 - 00:00:00 (Local):</b><br>", "Timestamp: $t<br>", // 17269200 "GMT: ", gmdate($df,$t), "<br>", // 01.07.1970 - 21:00:00 (7200) "Local: ", date($df,$t), "<br>", // 02.07.1970 - 00:00:00 (10800) "----------------------------------------<br>"; $t=gmmktime(0,0,0,7,20,1970); echo "<br><b>Make 20.07.1970 - 00:00:00 (GMT):</b><br>", "Timestamp: $t<br>", // 17280000 (=86400*200) "GMT: ", gmdate($df,$t), "<br>", // 02.07.1970 - 00:00:00 (7200) "Local: ", date($df,$t), "<br>", // 02.07.1970 - 03:00:00 (10800) "----------------------------------------<br>"; ?> -- Edit bug report at: http://bugs.php.net/?id=14391&edit=1