From:             pilots@[...].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


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