Access denied for user 'root'@'localhost' (using password: NO) in Joomla when using another user account

Question

I'm working on a hosting which currently have Joomla installed. I want to test my new page which doesn't run over Joomla, neither Wordpress, neither any other CMS, It is just php code from scratch.

I created a new folder on the hosting but when I try to access via:

myhosting.com/mynewfolder/index.php

I get the next error

Access denied for user 'root@localhost' (using password:NO)

...but, the problem is that I'm not using root user. I'm trying to connect to another database which is in another server with a different username, not "root". I'm trying to connect using the next code, which works perfectly in my localhost:

$conn =  mysql_connect('external-hosting-on-another-server.com', 'username-not-root', 'password');

I'm pretty sure that hosting accepts external connections because, as I said, It works on my localhost.

I don't understand why it is trying to connect using a "root" user. I think it has something to do with Joomla, but I'm not sure.

Maybe if I delete all Joomla files in the hosting and upload only my files it will work, do you think?

Thank you for your help.

Answer 1

Does user have privileges of this database? You must to give it privileges about this database. From your database.

Try it, I believe that is this. Here I put the sentence that I use:

$con = mysql_connect("host","user","pass") or die ("Could not connect to database");

var_dump($con);

If var_dump($con) return resulset, is connected to database.