尝试在localhost上安装joomla时显示应用程序实例化错误

Question

I created a mySQL database called "testsite" using phpMyAdmin and downloaded all of my joomla files from my live site to the folder wamp/www/testsite. (I already have a live site that I would like to have on a localhost).

When I want to look at the site I get the following error: "Error displaying the error page: Application Instantiation Error"

I undestand this is because the configuration.php file is not set up properly, here is the relevant part of it, I don't know where my mistake is...

    public $dbtype = 'mysql';
    public $host = 'localhost';
    public $user = 'root';
    public $password = '';
    public $db = 'testsite';
    public $dbprefix = '';

I know this does or should not cause the error, but here is the other part that I need to change and am not sure as to what exactly to change, this is what I have tried:

    public $log_path = '/C:/wamp/www/testsite/logs';
    public $tmp_path = '/C:/wamp/www/testsite/tmp';

Answer 1

Simple answer, the database credentials you have entered in the configuration.php file aren't correct.

This line must be correct as you already mentioned you have created a database called testsite

public $db = 'testsite';

After this, you're supposed to create a user and assign this user to the database. You are currently using the user root which I believe is a default user, however have you assigned it to the database you created? Either way, I would not do this, I would create a completely new user with a password of your choice and assign this one to the database.

Update

You have strict errors appearing on your site. This happens a lot with Joomla and PHP 5.4+

Turn turn them off, firstly, open the php.ini file for wampserver (check the last comment on my answer to another question here)

Then set error reporting to :

error_reporting = E_ALL & ~E_NOTICE & ~E_STRICT

Update 2

Here is another approach that worked for me:

In the configuration.php look for public $error_reporting = 'default'; and change it to public $error_reporting = '30711';