DB error?

[Kenneth]

Following this:

tutorialzine.com/2010/10/ajax-web-chat-php-mysql/

wediction.com/

I think I have a bad DB or something because I'm not about to type anything o.O

<?php

class DB {
private static $instance;
private $MySQLi;

private function __construct(array $dbOptions){

$this->MySQLi = @ new mysqli( $dbOptions['db_host'],
$dbOptions['localhost'],
$dbOptions['pw'],
$dbOptions['web82-sqltable'] );

if (mysqli_connect_errno()) {
throw new Exception('Database error.');
}

$this->MySQLi->set_charset("utf8");
}

public static function init(array $dbOptions){
if(self::$instance instanceof self){
return false;
}

self::$instance = new self($dbOptions);
}

public static function getMySQLiObject(){
return self::$instance->MySQLi;
}

public static function query($q){
return self::$instance->MySQLi->query($q);
}

public static function esc($str){
return self::$instance->MySQLi->real_escape_string(htmlspecialchars($str));
}
}

?>

[Bobby]

I don't see a problem with the class. How about the code invoking it?