<?php
interface Conn
{
   public function GetConn();
   public function GetConfiguration();
}
class Config implements Conn
{
    private $host = 'localhost';
    private $user = 'root';
    private $pass = 'hcoins';
    private $db = 'hcoins';
    private $dns = 'mysql';
    public $Authorize = 1;
    protected $conn;

    public function GetConn()
    {
         if($this->Authorize == 1)
         {
            try
            {
               $this->conn = new PDO(''.$this->dns.':host='.$this->host.';dbname='.$this->db,$this->user,$this->pass);
               $this->conn->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
               $this->conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
               return $this->conn;
            }
            catch(PDOException $exception)
            {
               $e = $exception->getMessage();
               echo $e;
            }
         }
         else
         {
            return print 'Nessun autorizzazione di connessione';
         }
    }
    public function GetConfiguration()
    {
      if(!file_exists('conn.php'))
      {
         return print 'File di configurazione globale non trovato';
      }
      if(!class_exists('Config'))
      {
          return print 'Classe di configurazione globale non trovata';
      }
    }
    public function GetAll()
    {
      $function1 = $this->GetConfiguration();
      $function2 = $this->GetConn();
      return $function1;
      return $function2;
    }
}

$conn = new Config;
$conn->GetAll();