code: public function sendPluginCmd($plugin, $data, $cpw = null, $subscribed = false)
      {
          if ($this->getId() != $this->getParent()->whoamiGet("client_channel_id")) {
              $this->getParent()->clientMove($this->getParent()->whoamiGet("client_id"), $this->getId(), $cpw);
          }
  
          $this->execute(
              "plugincmd",
              array(
                  "name" => $plugin,
                  "data" => $data,
                  "targetmode" => $subscribed ? TeamSpeak3::PLUGINCMD_CHANNEL_SUBSCRIBED : TeamSpeak3::PLUGINCMD_CHANNEL
              )
          );
      }
docs: Sends a plugin command to all clients in the channel.
  
  @param  string $plugin
  @param  string $data
  @param  string $cpw
  @param  boolean $subscribed
  @return void