如何正确连接到mysql数据库？

Question

Here is my code:

<?php
    require_once('config.php');
    $link = mysqli_connect($db_host, $db_user, $db_pass, $db_name) or die ('Your DB connection is misconfigured. Enter the correct values and try again.');
?>

I have stored my host, username, password and database name in the separate file config.php. I know that the information is correct because I can connect to my database via putty, but I keep getting the error:

Warning: mysqli_connect(): (HY000/1045): Access denied for user 'blank'@'T9AF3.WPA.blank.Ca' (using password: YES) in C:\\xampp\\htdocs\\temp2\\index.php on line 3 Your DB connection is misconfigured. Enter the correct values and try again.

Note: 'blank' is there to protect my identity and is not a typing error.

Edit: I only used putty to test that my login information was correct. Putty has very little to do with my actual question.

Edit2:

<?php
    $db_host = 'host';
    $db_user = 'user';                  
    $db_pass = 'pass';                  
    $db_name = 'dbname';
?>

These are filers.

Answer 1

if you can login from putty, by that i think you mean localhost, and you can't from php file, which is i think trying to connect remotely, the problem most probably lies on your user not defined for your servers ip. your server, which you are trying to connect from is 'T9AF3.WPA.blank.Ca' in mysql a username has a password and a location and mysql uses both to authenticate the user. you can have permission to connect locally but not remotely ie from another server. check with your system admin to make sure you have proper access defined from 'T9AF3.WPA.blank.Ca'.

Or you have not specified an IP Address for the server to listen to. It may only be listening on localhost of your server, instead of allowing remote connections. Check your mysql configuration and which IP address it is listening on.

Answer 2

您的mysql用户必须对正在使用的数据库具有适当的权限