phpMyAdmin Remote Access - php

Question

I am trying to access phpMyAdmin from Ubuntu remotely, and not through localhost on the Ubuntu droplet (DigitalOcean). To do this, I need to change the setup of the config.ini.php in /etc/phpmyadmin.
When running the following code:
<?php
$link = mysqli_connect("ip_address", "username", "password", "mysql")
if (!$link) {
echo "Error: Unable to connect to MySql" . PHP_EOL;
exit;
}
echo "Success: Connected to MySQL" . PHP_EOL;
echo "Host Information: " . mysqli_get_host_info($link) . PHP_EOL;
mysqli_close($link);
?>
I get "mysqli_connect(): (HY000/2002): Connection refused in ...."
Tips to configuration in config.ini.php so I can use the ip address to connect?

Answer 1

I would comment if I could. Basically this is what you are after.
MySQL root access from all hosts
So you need to first grant privileges for table mysql to root or the username you are using for this case.
GRANT ALL PRIVILEGES ON mysql.* TO 'username'#'%' IDENTIFIED BY 'password';
Then you need edit the mysql config file
nano /etc/mysql/mysql.conf.d/mysqld.cnf
Comment out #bind-address = 127.0.0.1 then save the config file.
Restart mysql service mysql restart

Answer 2

First debug:
Is Your digital ocean accessible by global adress?
Second thing:
You use mysqli_connect(); You pass the arguments as a "ip_address", "username", "password", "mysql" -> That means that you do not pass variables but literally string ip_adresss; This is for stack overflow purposes?
Third thing:
In modern mysql versions ROOT user should have password and for mysql_server service should be enabled hosts others than localhosts. Try to debug that. Check the ports: 3306 by default
Fourth thing:
Do not use mysqli_connect. Try PDO or Doctrine in Your project

Answer 3

Make MySQL Server open to remote access connections
nano /etc/mysql/mysql.conf.d/mysqld.cnf
Find bind-address option, change to
bind-address = 0.0.0.0
Configure phpMyAdmin to work with remote connections
If you use phpMyAdmin v5+, first of all, you have to rename config.sample.inc.php to config.inc.php
mv config.sample.inc.php config.inc.php
If yoy have an old one - just edit config.inc.php
nano config.inc.php
Find $cfg['Servers'][...] array and add after
$i++;
$cfg['Servers'][$i]['host'] = 'xxx.xxx.xxx.xxx'; //Remote MySQL IP address
$cfg['Servers'][$i]['port'] = '3306'; //or your custom port
PROFIT. Go to your phpMyAdmin and look at login form select with choosing remote connections.