phpseclib\Net\SSH1::interactiveWrite PHP Method

    function interactiveWrite($cmd)
    {
        if (!($this->bitmap & self::MASK_LOGIN)) {
            throw new \RuntimeException('Operation disallowed prior to login()');
        }
        if (!($this->bitmap & self::MASK_SHELL) && !$this->_initShell()) {
            throw new \RuntimeException('Unable to initiate an interactive shell session');
        }
        $data = pack('CNa*', NET_SSH1_CMSG_STDIN_DATA, strlen($cmd), $cmd);
        if (!$this->_send_binary_packet($data)) {
            throw new \RuntimeException('Error sending SSH_CMSG_STDIN');
        }
        return true;
    }