<?php

/**
*
*/
class Database
{

    private $dbh;
    private $error;
    private $stmt;
    private $db_name = DB_NAME;
    private $db_user = DB_USER;
    private $db_pass = DB_PASS;
    private $db_host = DB_HOST;

    function __construct()
    {
        $dsn = 'mysql:host=' . $this->db_host . ';dbname=' . $this->db_name;

        $dsn_options = array(
            PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES utf8',
            PDO::ATTR_PERSISTENT => true,
            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION
        );

        try {
            $dbh = new PDO($dsn, $this->db_user, $this->db_pass, $dsn_options);
        } catch (PDOException $e) {
            $this->error = $e->getMessage();
        }

    }

    public function query ($query)
    {
        $this->stmt = $this->dbh->prepare($query);
    }

    public function bind($param, $value, $type = null)
    {
        if (is_null($type)) {
            switch (true) {
            case is_int($value):
                $type = PDO::PARAM_INT;
                break;
            case is_bool($value):
                $type = PDO::PARAM_BOOL;
                break;
            case is_null($value):
                $type = PDO::PARAM_NULL;
                break;
            default:
                $type = PDO::PARAM_STR;
            }
        }

        $this->stmt->bindValue($param, $value, $type);
    }

    public function execute()
    {
        return $this->stmt->execute();
    }

    public function resultset(){
        $this->execute();
        return $this->stmt->fetchAll(PDO::FETCH_ASSOC);
    }

    public function single(){
        $this->execute();
        return $this->stmt->fetch(PDO::FETCH_ASSOC);
    }

    public function rowCount(){
        return $this->stmt->rowCount();
    }

    public function lastInsertId(){
        return $this->dbh->lastInsertId();
    }

    public function beginTransaction(){
        return $this->dbh->beginTransaction();
    }

    public function endTransaction(){
        return $this->dbh->commit();
    }

    public function cancelTransaction(){
        return $this->dbh->rollBack();
    }

    public function debugDumpParams(){
        return $this->stmt->debugDumpParams();
    }

}



        $db = new Database;

        $db->query('SELECT * FROM servers');

        $rows = $database->resultset();

        echo "<pre>";
        print_r($rows);
        echo "</pre>";