note 78903 added to reserved.variables

Note that some headers will be checked for validity (by Apache, I suppose) before showing up in $_SERVER -- If-Modified-Since for example. <?php $lastmod = gmdate('D, d M Y H:i:s', filemtime('somefile')); header("Last-Modified: $lastmod"); ?> This WON'T work, "GMT" is missing. Internet Explorer auto-fixes this by adding GMT, while Firefox resends this data as-is. (So an If-Modified-Since-header is sent, but neither shows up in $_SERVER nor in apache_request_headers()). This would be correct: <?php $lastmod = gmdate('D, d M Y H:i:s', filemtime('somefile')) . 'GMT'; header("Last-Modified: $lastmod"); ?> ---- Server IP: 217.13.201.10 Probable Submitter: 85.179.178.38 ---- Manual Page -- http://www.php.net/manual/en/reserved.variables.php Edit -- https://master.php.net/note/edit/78903 Del: integrated -- https://master.php.net/note/delete/78903/integrated Del: useless -- https://master.php.net/note/delete/78903/useless Del: bad code -- https://master.php.net/note/delete/78903/bad+code Del: spam -- https://master.php.net/note/delete/78903/spam Del: non-english -- https://master.php.net/note/delete/78903/non-english Del: in docs -- https://master.php.net/note/delete/78903/in+docs Del: other reasons-- https://master.php.net/note/delete/78903 Reject -- https://master.php.net/note/reject/78903 Search -- https://master.php.net/manage/user-notes.php