无法连接到VPS服务器上的MySQL

Question

I want to connect to a VPS server with the following code. What is wrong with it?

<?php
$con = mysqli_connect("A.B.C.D", "user", "pass", "db1");
if (!$con)  {
    die("Could not connect: ".mysqli_errno());
}

$sql = "SELECT * FROM table1";

$result = mysqli_query($con, $sql);
$row = mysqli_fetch_array($result);
extract($row);

echo $name;

?>

The above code gives the error : Could not connect:

However, when I use "localhost" and run this script on a copy of that database and table that I have in my laptop, it runs smoothly and echoes the name from the first record in the table.

Why am I not being able to connect to my VPS?

Answer 1

Make sure MySQL has enabled outside access, you probably don't have access from remote machines to the VPS.

UPDATE: Do you have access to phpmyadmin or a tool like that?

Answer 2

Check the following;

• MySql is allowing network connections, other than localhost
• Your firewall is not blocking your MySQL Port
• The user you are connecting with, has either @% access, or your IP