i copied the below code from the forum in openERP to Malaysia OpenERP – instant-erp web site , i do this reason is to prevent some good pointer to start something new may loss after changes / upgrade of forum application,

i have lots of good bookmarks of topic in the openobject forum , but after update , i lost all of them and
i think from now on , if i find any good topic ,i will re-post it over here!

ok , let is the forum post

Note that it’s not necessary in PHP to specify the type of all arguments given to XML-RPC calls if you use php_xmlrpc_encode() function. In fact, we had something similar to what you did which avoids passing $uid and parameter types in each call:

We didn’t need create, write, unlink or action, but is the code that implements login, search and read, in case it’s useful to anyone:

class OpenErpConnection
{
        public $user;
        public $userId;
        public $password;
        public $database;
        public $url;
        public $connection;

        function __construct($user, $password, $database, $url)
        {
                $this->user = $user;
                $this->password = $password;
                $this->database = $database;
                $this->url = $url;
        }

        function login()
        {
                $msg = new xmlrpcmsg(‘login’);
                $msg->addParam(new xmlrpcval($this->database, “string”));
                $msg->addParam(new xmlrpcval($this->user, “string”));
                $msg->addParam(new xmlrpcval($this->password, “string”));

                $connection = new xmlrpc_client($this->url.’common’);
                $resp = $connection->send($msg);
                $val = $resp->value();
                $this->userId = $val->scalarVal();
                return $this->userId;
        }

        function search($relation,$domain)
        {
                $msg = new xmlrpcmsg(‘execute’);
                $msg->addParam(new xmlrpcval($this->database, “string”));
                $msg->addParam(new xmlrpcval($this->userId, “int”));
                $msg->addParam(new xmlrpcval($this->password, “string”));
                $msg->addParam(new xmlrpcval($relation, “string”));
                $msg->addParam(new xmlrpcval(“search”, “string”));
                $msg->addParam(php_xmlrpc_encode($domain));

                $connection = new xmlrpc_client($this->url.’object’);
                $resp = $connection->send($msg);
                //echo “FAULT: ” . $resp->faultString();
                $val = $resp->value();

                return php_xmlrpc_decode($val);
        }

        function read($relation,$ids,$fields=array(),$context=array())
        {
                $msg = new xmlrpcmsg(‘execute’);
                $msg->addParam(new xmlrpcval($this->database, “string”));
                $msg->addParam(new xmlrpcval($this->userId, “int”));
                $msg->addParam(new xmlrpcval($this->password, “string”));
                $msg->addParam(new xmlrpcval($relation, “string”));
                $msg->addParam(new xmlrpcval(“read”, “string”));
                $msg->addParam(php_xmlrpc_encode($ids));
                $msg->addParam(php_xmlrpc_encode($fields));
                $connection = new xmlrpc_client($this->url.’object’);
                $resp = $connection->send($msg);
                $val = $resp->value();

                return php_xmlrpc_decode($val);
        }
}