Part on DatabaseClass finished

Database.php

@@ -0,0 +1,18 @@
+<?php
+// connect to MySQL database.
+class Database {
+    public $connection;
+
+    public function __construct()
+    {
+        $dsn = "mysql:host=localhost;port=3306;dbname=myapp;charset=utf8mb4";
+        $username = 'appUser';
+        $password = 'password';
+        $this->connection  = new PDO($dsn, $username, $password);
+    }
+    public function query($query) {
+        $statement = $this->connection->prepare($query);
+        $statement->execute();
+        return $statement;
+    }
+}

index.php

@@ -1,18 +1,9 @@
 <?php
 require 'functions.php';
-
+require 'Database.php';
 //require 'router.php';
-// connect to MySQL database.
-$dsn = "mysql:host=localhost;port=3306;dbname=myapp;charset=utf8mb4";
-$username = 'appUser';
-$password = 'password';
-$pdo = new PDO($dsn, $username, $password);
 
-$statement = $pdo->prepare("SELECT * FROM posts");
-$statement->execute();
+$db = new Database();
+$posts = $db->query("SELECT * FROM posts")->fetchAll(PDO::FETCH_ASSOC);
 
-$posts = $statement->fetchAll(PDO::FETCH_ASSOC);
-
-foreach ($posts as $post) {
-    echo "<li>" . $post['title'] . "</li>";
-}
+dd($posts);