#39012 [Opn->Bgs]: Incorrect gmdate('U') and date_default_timezone_set()

ID: 39012 Updated by: derick@php.net Reported By: djmaze at planet dot nl -Status: Open +Status: Bogus Bug Type: Date/time related Operating System: Windows PHP Version: 5.1.6 New Comment: Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php Unix timestamps are always in GMT (=UTC) so there is no problem here. Previous Comments: ------------------------------------------------------------------------ [2006-10-01 19:57:09] djmaze at planet dot nl Description: ------------ gmdate('U') shows the incorrect unix epoch. http://php.net/gmdate: 'Format a GMT/UTC date/time' http://php.net/date: 'U = Seconds since the Unix Epoch (January 1 1970 00:00:00 GMT)' After calling date_default_timezone_set() everything is messed up, or is that the whole purpose but someone forgot to document it? Reproduce code: --------------- <?php function get_unixts() { return array( 'time()' => time(), 'date(\'U\')' => date('U'), 'date(\'Z\')' => date('Z'), 'gmtime' => (time()-date('Z')), 'gmdate(\'U\')' => gmdate('U'), 'gmdate(\'Z\')' => gmdate('Z'), 'date_default_timezone' => date_default_timezone_get(), ); } $def = get_unixts(); date_default_timezone_set('UTC'); $set = get_unixts(); echo '<html><body><table border="1"><tr><td>type</td><td>normal</td><td>after set UTC</td></tr>'; foreach ($def as $t => $v) { echo "<tr><td>$t</td><td>$v</td><td>{$set[$t]}</td></tr>"; } echo '</table></body></html>'; ?> Expected result: ---------------- type normal after set UTC time() 1159732108 1159724908 date('U') 1159732108 1159724908 date('Z') 7200 0 gmtime 1159724908 1159724908 gmdate('U') 1159724908 1159724908 gmdate('Z') 0 0 Actual result: -------------- type normal after set UTC time() 1159732108 1159732108 date('U') 1159732108 1159732108 date('Z') 7200 0 gmtime 1159724908 1159732108 gmdate('U') 1159732108 1159732108 gmdate('Z') 0 0 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=39012&edit=1