WP error connecting to DB - sql

Question

I get this message when I try to access my site.
The site was working properly, and I tried to add google analytics...
Anyway, sodabrasil was a site created out of WP.
sodabrasil.com/paskin was WP.
We did the integration of logins. Everything was working.
When I run http://sodabrasil.com/dbtest.php, it says it's connected.
this is the debug code.
<?php
//connect to MySQL Server
$conn = mysql_connect("localhost", "*****", "******");
if (!$conn)
{
die(mysql_error());
}
else
{
echo "1. Successfully connected to MySQL database server.<br /><br />";
}
// select database
$db_sel = mysql_select_db('*********', $conn);
if (!$db_sel)
{
die ('cant\'t use database: ' . mysql_error());
}
else
{
echo "2. WordPress database selected. <br />";
}
?>
the database * is the DB sodabrasil uses for the login.
But accessing sodabrasil is blocked even before the login!!!
I am not a professional coder, which makes things a lot harder.
This is the real config file:
<?php
error_reporting(E_ALL);
ini_set("display_errors", 1);
define('WP_USE_THEMES', false);
//echo $_SERVER['DOCUMENT_ROOT'];
//die;
//require_once('./blog/wp-blog-header.php');
require_once('/home/houswe5/public_html/sodabrasil.com/paskin/wp-blog-header.php');
global $mysqli;
$server = 'localhost'; // The host you want to connect to.
$username = '****'; // The database username.
$password = '*****'; // The database password.
$database = '*******'; // The database name.
$dbms = 'MySQL 5';
$dbport = '3306';
//$dbh = mysql_connect($server, $username, $password) or die("Unable to connect to SQL server");
//$my_db = #mysql_select_db($database) or die("Unable to select database");
$mysqli = new mysqli($server, $username, $password, $database);
//$mysqli = mysqli_connect($server, $username, $password, $database) or die("Error " . mysqli_error($link));
if ($mysqli->connect_errno) {
echo "Failed to connect to MySQL: (" . $mysqli->connect_errno . ") " . $mysqli->connect_error;die;
}
// If you are connecting via TCP/IP rather than a UNIX socket remember to add the port number as a parameter.
?>
Exact same credentials.
But this url (http://sodabrasil.com/db_connect.php) throws the error message in regards to DB.
Thank you for you help.
G.