code: public function checkPass($password = null)
      {
          if ($password === null) {
              $password = $this->pass;
          }
  
          if (strlen($password) == 0) {
              return true;
          }
  
          $pattern = "/^(" . $this->regex["alphanum"] . "|" . $this->regex["mark"] . "|" . $this->regex["escaped"] . "|[;:&=+$,])+$/";
          $status = @preg_match($pattern, $password);
  
          if ($status === false) {
              throw new Ts3Exception("URI password validation failed");
          }
  
          return ($status == 1);
      }
docs: Returns TRUE if the password is valid.
  
  @param  string $password
  @throws Ts3Exception
  @return boolean