PHP: getallheaders

User Contributed Notes
getallheaders

lorro at lorro dot hu
19-Apr-2005 08:25


Beware that RFC2616 (HTTP/1.1) defines header fields as case-insensitive entities. Therefore, array keys of getallheaders() should be converted first to lower- or uppercase and processed such.

ZevS
17-Apr-2005 03:24


if PHP installed not as Apache-module:



<?php

function emu_getallheaders() {

    foreach($_SERVER as $h=>$v)

        if(ereg('HTTP_(.+)',$h,$hp))

            $headers[$hp[1]]=$v;

    return $headers;

}

?>



I put this code to file "/var/www/include", and edit php.ini:

auto_prepend_file = "/var/www/include"

jukkaho at mail dot student dot oulu dot fi
17-Jan-2003 04:14


This function really is useful. Although $_SERVER['HTTP_*']-variables seem to include all request headers, they are really only the most generally needed - not all of them.



One example that needs this functionality is Digest Authentication (http://www.ietf.org/rfc/rfc2617.txt). When implementing it in PHP script, you can't read client's "Authorization"-header without this function.

linuxapps at yahoo dot com
22-Nov-2002 09:14


I think the previous poster is new to web development, so to keep the confusion down I recommend that other newbies read a tutorial on the HTTP protocol.



The poster meant well, but server variables have absolutely nothing to do with this function (nor the HTTP protocol). They aren't a part of the received browser header. getallheaders() will return the entire BROWSER header string to an array.



That's all it is supposed to do and as it was pointed out (by smclean) that this is a VERY USEFUL feature for certain applications. That's why I looked up the function in the first place!



So, yes, you must use the $_SERVER array to retrieve server variables. And to understand certain variables passed by the server read up on the CGI protocol.

kevin at frontierworld dot com
14-Aug-2000 08:58


You can read the HTTP username and password via the Authorization header by decoding its value from base 64 (if you're using the BASIC authorization scheme). For details about using DBM to maintain usernames and passwords, see http://www.web-hosting.com/dbm.html

jarl at diku dot dk
25-Mar-2000 05:15


All the environment variables can be found here:


http://www.php.net/manual/language.variables.predefined.php

getallheaders

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