[Luis-]

There's a typo in your tutorial.

These are wrong.

pawn Code:

mysql_connections[0] = mysql_connect("127.0.0.1", "root", "", "database");
mysql_connections[1] = mysql_connect("127.0.0.1", "root", "", "second_database");

Should be this;

pawn Code:

mysql_connections[0] = mysql_connect("127.0.0.1", "root", "database", "");
mysql_connections[1] = mysql_connect("127.0.0.1", "root", "second_database", "");