<?php
$db_host = 'localhost';
$db_port = '5432';
$db_name = 'fusionpbx';
$db_username = 'fusionpbx';
$db_password = '****';

$db = new PDO("pgsql:dbname=$db_name user=$db_username password=$db_password");
$stmt = $db->prepare("select 'hello'");
$stmt->execute();
$result = $stmt->fetchAll(PDO::FETCH_NAMED);
print_r($result);