code: public function permissionGetIdByName($name)
      {
          if (!array_key_exists((string)$name, $this->permissionList())) {
              throw new Ts3Exception("invalid permission ID", 0xA02);
          }
  
          return $this->permissionList[(string)$name]["permid"];
      }
docs: Returns the ID of the permission matching the given name.
  
  @param  string $name
  @throws Ts3Exception
  @return integer