1. "Constant" variables

1.1. $xmlrpcerruser

$xmlrpcerruser = 800;The minimum value for errors reported by user implemented XML-RPC servers. Error numbers lower than that are reserved for library usage.

1.2. $xmlrpcI4, $xmlrpcInt, $xmlrpcDouble, $xmlrpcString, $xmlrpcDateTime, $xmlrpcBase64 , $xmlrpcArray, $xmlrpcStruct

For convenience the strings representing the XML-RPC types have been encoded as global variables:

$xmlrpcI4="i4";
$xmlrpcInt="int";
$xmlrpcBoolean="boolean";
$xmlrpcDouble="double";
$xmlrpcString="string";
$xmlrpcDateTime="dateTime.iso8601";
$xmlrpcBase64="base64";
$xmlrpcArray="array";
$xmlrpcStruct="struct";

1.3. $xmlrpcTypes, $xmlEntities, $xmlrpcerr, $xmlrpcstr, $xmlrpcerrxml, $xmlrpc_backslash, $_xh

Reserved for internal usage.