PHP - how can i get list of all headers

I use a php proxy to bypass JS cross domain issue. I want to pass some of 开发者_StackOverflow社区the headers from the client to the destination server.

How can i receive a list of all headers?

PHP has a built in function called get_headers() which you should be able to make use of.

You can access the request headers by calling getallheaders.

Would not do that via PHP. See if this is suitable for you, if you use apache2: http://httpd.apache.org/docs/2.2/mod/mod_proxy.html

getallheaders() and apache_request_headers() don't seem to work on my server.. I'm assuming it's because its only available "under FastCGI" or "when PHP was installed as an Apache module." (according to http://www.php.net/manual/en/function.apache-request-headers.php)

However, a comment by jrabbit on the same page details a replacement function which seems to work for me:

<?php 
if (!function_exists('apache_request_headers')) { 
    eval(' 
        function apache_request_headers() { 
            foreach($_SERVER as $key=>$value) { 
                if (substr($key,0,5)=="HTTP_") { 
                    $key=str_replace(" ","-",ucwords(strtolower(str_replace("_"," ",substr($key,5))))); 
                    $out[$key]=$value; 
                } 
            } 
            return $out; 
        } 
    '); 
} 
?>

User limalopex.eisfux.de has another implementation on the same page which I have not tested.