Teach me how to program

config/database.php

PHP Code:

$db['default'] = array(
    'dsn'    => '',
    'hostname' => 'localhost',
    'username' => 'gsaconst_admin',
    'password' => '************',
    'database' => 'gsaconst_database',
    'dbdriver' => 'mysqli', 


http://localhost/ci3/

PHP Code:

A PHP Error was encountered

Severity: Warning

Message: mysqli::real_connect(): (HY000/1045): Access denied for user 'gsaconst_admin'@'localhost' (using password: YES)

Filename: mysqli/mysqli_driver.php

Line Number: 202

Backtrace:

File: C:\xampp\htdocs\ci3\application\core\MY_Controller.php
Line: 7
Function: __construct

File: C:\xampp\htdocs\ci3\application\controllers\home.php
Line: 9
Function: __construct

File: C:\xampp\htdocs\ci3\index.php
Line: 292
Function: require_once
A Database Error Occurred

Unable to connect to your database server using the provided settings.

Filename: C:/xampp/htdocs/ci3/application/core/MY_Controller.php

Line Number: 7 


database/DB_driver.php

PHP Code:

abstract class CI_DB_driver {

    /**
     * Data Source Name / Connect string
     *
     * @var    string
     */
    public $dsn;

    /**
     * Username
     *
     * @var    string
     */
    public $username;

    /**
     * Password
     *
     * @var    string
     */
    public $password;

    /**
     * Hostname
     *
     * @var    string
     */
    public $hostname;

    /**
     * Database name
     *
     * @var    string
     */
    public $database;

    /**
     * Database driver
     *
     * @var    string
     */
    public $dbdriver        = 'mysqli'; 


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