PHP: connect with external mysql database

Question

I want to connect with external database using PHP . But, it gives this error

Warning: mysql_connect(): Can't connect to MySQL server on 'SERVER_IP_ADDRESS' (110) in /home/<username>/public_html/index.php on line 7
Can't connect to MySQL server on 'SERVER_IP_ADDRESS' (110)

Here is my code.

define("_CONFIG_DB_HOST", "SERVER_IP_ADDRESS");  /* database host name */
define("_CONFIG_DB_NAME", "DATABASE_NAME");    /* database name */
define("_CONFIG_DB_USER", "DATABASE_USERNAME");    /* database username */
define("_CONFIG_DB_PASS", "DATABASE_PASSWORD");    /* database password */


$con = mysql_connect(_CONFIG_DB_HOST,_CONFIG_DB_USER,_CONFIG_DB_PASS) or die(mysql_error());
mysql_select_db(_CONFIG_DB_NAME,$con) or die(mysql_error());

I've also added entry for Remote Database Access Hosts in Host Server

Please guide me if I'm doing anything wrong.

Answer 1

Make sure DATABASE_USERNAME has access from you host (the machine running this script) has access to DATABASE_NAME on SERVER_IP_ADDRESS .

When you grant access on database to use you would use USERNAME@HOST form. Here the HOST means the host where this USERNAME would be connecting from. Usually we keep it localhost . becasue we want to connect by a user who is in localhost according to mysql server. But your local host is not mysql servers localhost. That's why that host part needs to be changed.