I\'ve seen a few errors like this, but I found no answer.
Unable to connect to database: Access denied for user \'\'@\'localhost\' to database \'socialdb\'
You did not specify a user in neither mysql_connect or your PHP configuration.
mysql_connect
Either set mysql.default_user and mysql.default_password in your PHP configuration or use the appropriate arguments for mysql_connect.
mysql.default_user
mysql.default_password