diff options
Diffstat (limited to 'includes/common.inc')
| -rw-r--r-- | includes/common.inc | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/includes/common.inc b/includes/common.inc index 58acf513e..16d1bef5d 100644 --- a/includes/common.inc +++ b/includes/common.inc @@ -842,8 +842,12 @@ function page_header() { $date = gmdate("D, d M Y H:i:s", $cache->created) ." GMT"; header("Last-Modified: $date"); header("ETag: \"$date\""); - if ($headers = getallheaders()) { - // NOTE: the above is an Apache-ism so for the time being we don't send 304 headers to IIS servers. + if (function_exists("getallheaders") && $headers = getallheaders()) { + /* + ** Notice that the above is an optional Apache-ism so for the + ** time being we don't send 304 headers when "getallheaders()" + ** is not supported (eg. on IIS webservers). + */ if ($headers["If-Modified-Since"] == $date && $headers["If-None-Match"] == "\"$date\"") { header("HTTP/1.0 304 Not Modified"); exit(); |