One_Step

As a user of a website, like my own, is it possible to see the code that has been used on a page?

I was wondering about it because the following code would be visible,

and I assume giving my database password to everyone would be a terrible thing to do.

<?php
$servername = "localhost";
$username = "username";
$password = "password";

// Create connection
$conn = new mysqli($servername, $username, $password);

// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully";
?>