src/pubcontrolclient.php
public function publish($channel, $item)
    {
        $export = $item->export();
        $export['channel'] = $channel;
        $uri = null;
        $auth = null;
        $uri = $this->uri;
        $auth = $this->pcc_utilities->gen_auth_header($this->auth_jwt_claim,
                $this->auth_jwt_key, $this->auth_basic_user,
                $this->auth_basic_pass);
        $this->pcc_utilities->pubcall($uri, $auth, array($export));
    }
public function publish($channel, $item)
    {
        $export = $item->export();
        $export['channel'] = $channel;
        $uri = null;
        $auth = null;
        $uri = $this->uri;
        $auth = $this->pcc_utilities->gen_auth_header($this->auth_jwt_claim,
                $this->auth_jwt_key, $this->auth_basic_user,
                $this->auth_basic_pass);
        $this->pcc_utilities->pubcall($uri, $auth, array($export));
    }
specified channel on the configured endpoint.