created database to store all relevant data

php/Database.php

@@ -0,0 +1,37 @@
+<?php
+
+class Database
+{
+    private static $instance = null;
+    private $conn;
+
+    private $servername = "192.168.0.30";
+    private $username = "root";
+    private $password = "1qayxsw2";
+    private $dbname = "hub";
+
+    // The db connection is established in the private constructor.
+    private function __construct()
+    {
+        // Create connection
+        $this->conn = new mysqli($this->servername, $this->username, $this->password, $this->dbname);
+
+        if ($this->conn->connect_errno) {
+            echo "connecton failed... nr: " . $this->conn->connect_errno . " -- " . $this->conn->connect_error;
+        }
+    }
+
+    public static function getInstance()
+    {
+        if (!self::$instance) {
+            self::$instance = new Database();
+        }
+
+        return self::$instance;
+    }
+
+    public function getConnection()
+    {
+        return $this->conn;
+    }
+}