<?php
    class connection {
        private $database;
        private $host;
        private $port;
        private $user;
        private $pass;
        public $db;
        public function __construct(){
            $this->user='postgres';
            $this->pass='secret';
            $this->host='localhost';
            $this->database='form';
            $this->port=5432;
            $this->db=new PDO("pgsql:host=".$this->host.
            ";port=".$this->port.
            ";dbname=".$this->database
            ,"'".$this->user."'"
            ,"'".$this->pass."'");
            $this->db->exec("SET CHARACTER SET utf8");
            return $this->db;
        }
        public function __clone(){
            trigger_error('The clone is not allowed', E_USER_ERROR);
        }
    }
?>