Modern AAC connection error

[Kavvson]

A PHP Error was encountered

Severity: Warning

Message: PDO::__construct(): [2002] Invalid argument (trying to connect via unix://)

Filename: POT/OTS_DB_MySQL.php

Line Number: 98
Can't connect to MySQL database.

Config.php

/*Database information*/
$config['database']['host'] = "sql.boo.pl";
$config['database']['login'] = "secret";
$config['database']['password'] = "secret";
$config['database']['database'] = "modernaac";