处理IPB xml-rpc api响应

IPB Board provides a class (classXmlRpc) to access board features via a remote server. Sending a request seems easy to me, however I fail at processing the response I get.

I tried loading the response into SimpleXML but got a fatal error, so I did a var_dump, would have expected to see xml, instead I see something that doesn't look like xml...

Here's the entire output

Here's the request via the classXmlRpc:

$response   = $classXmlRpc->sendXmlRpc( "http://jdbartist.bplaced.net/forum/interface/board/index.php", "fetchStats", array( 'api_module' => 'ipb', 'api_key' => 'security_key' ) ) ;

And this is a small snippet of the output:

array(2) { 
    ["html attr"]=> array(1) { 
        ["lang"]=> string(2) "en" 
    }
    ["html"]=> &array(3) { 
        ["head"]=> array(5) { 
            ["title"]=> string(30) "Error - Gaming Nexus Community" 
            ["meta"]=> array(16) { 
                [0]=> string(0) "" 
                ["0 attr"]=> array(1) { 
                    ["charset"]=> string(5) "UTF-8" 
                }
                ["1 attr"]=> array(2) { 
                        ["http-equiv"]=> string(15) "X-UA-Compatible"
...

Basically, what is that and how can I access the data within those arrays?