<?php

$hostname = "localhost";
$username = "root";
 $password = "";
$dbname = "myfirstdb";

//Δημιουργία της σύνδεσης
$conn = new mysqli($hostname , $username, $password, $dbname);

//Έλεγχος της σύνδεσης
if ($conn->connect_error)
{
die("Connection failed: " . $conn->connect_error);
 }

?>