db.php

<?php
/*
Plugin Name: PostgreSQL for WordPress (PG4WP)
Plugin URI: http://www.hawkix.net
Description: PG4WP is a special 'plugin' enabling WordPress to use a PostgreSQL database.
Version: 1.3.0+
Author: Hawk__
Author URI: http://www.hawkix.net
License: GPLv2 or newer.
*/

if( !defined('PG4WP_ROOT'))
{
// You can choose the driver to load here
define('DB_DRIVER', 'pgsql'); // 'pgsql' or 'mysql' are supported for now

// Set this to 'true' and check that `pg4wp` is writable if you want debug logs to be written
define( 'PG4WP_DEBUG', false);
// If you just want to log queries that generate errors, leave PG4WP_DEBUG to "false"
// and set this to true
define( 'PG4WP_LOG_ERRORS', true);

// If you want to allow insecure configuration (from the author point of view) to work with PG4WP,
// change this to true
define( 'PG4WP_INSECURE', false);

define( 'PG4WP_SCHEMA', 'public');

// This defines the directory where PG4WP files are loaded from
//   2 places checked : wp-content and wp-content/plugins
if( file_exists( ABSPATH.'/wp-content/pg4wp'))
	define( 'PG4WP_ROOT', ABSPATH.'/wp-content/pg4wp');
else
	define( 'PG4WP_ROOT', ABSPATH.'/wp-content/plugins/pg4wp');

// Here happens all the magic
require_once( PG4WP_ROOT.'/core.php');
} // Protection against multiple loading