Laravel 5 dont display generated key without errors

I dont understand why i can generate PGP keys and also encrypt it with GnuPG v1 but not in my Laravel Script:

Controller:

  $user_details = User::where('username',$user_name)->first();

  $secret = $this->generateSecretKey();

  $secret_hash = password_hash($secret, PASSWORD_BCRYPT);

  $this->secret_code = $secret_hash;

  //echo $user_details->pgp;

  putenv("GNUPGHOME =/home/.gnupg");
  $gpg = new gnupg();
  $key = $gpg->import($user_details->pgp);
  $gpg->addencryptkey($key['fingerprint']);
  $enc = $gpg->encrypt($secret);
  $gpg->clearencryptkeys();
  //echo '<textarea rows="30" class="form-control" name="pgp-msg">'.$enc.'</textarea>';

My blade:

<textarea name="message" id="message" class="form-control" rows="15" cols="40" readonly></textarea>

Text field is empty.

Must i echo or Print $enc on other way?

Gnupg is installed and i can enrypt in Terminal keys.

Thanks

via Chebli Mohamed