Does not connect to database and returns no error

Question

Hello, I made my site by xampp in windows, when I went to migrate to ubunto I realized that simply mysql did not work, and nor returned any error, for example, in the initial page of the site I already use the mysqli_connect, even with wrong user does not return any error.

No need to show code, because in xampp works perfectly.

Making the connection:

$conn = mysqli_connect(SQL_HOST, SQL_USUARIO, SQL_SENHA, SQL_BANCO);

Answer 1

Add the following lines to get the error:

// verificar a conexão
if (mysqli_connect_errno()){
  echo "Falha ao conectar ao servidor: " . mysqli_connect_error();
}

Answer 2

Solved the problem, actually looking at the log found that mysql was poorly installed, just reinstalled and everything worked right.