PEAR XML_RPC2_Server with array parameters

[spatterson]

I've an XML-RPC server using Pear's XML-RPC2 library and a method which needs to accept an array for one of its parameters - just a simple list of numbers. If I call this method, I get a server error fault string: 'server error. invalid method parameters'

sample code, trimmed as much as possible

require_once('XML/RPC2/Server.php'); 

class RPCServer {
/**
 * @param array $messageids list of message headerids to find
 */
public static function summaryHeaders($messageids) {

}
} // end class
$server = XML_RPC2_Server::create('RPCServer');
$server->handleCall();

XML-RPC Call

<methodcall>
<methodname>summaryHeaders</methodname>
<params>
<param>
<value>
<array>
<data>
<value>
<string>339346</string>
</value>
<value>
<string>339344</string>
</value>
</data>
</array>
</value>
</param>
</params>
</methodcall>

[spatterson]

To answer my own question, a hash or text-keyed array can be translated to XMLRPC as a struct, so

@param struct $arrayParameter