<?php
class DB
{
    public $host = 'localhost';
    public $username = 'aaron_aaron';
    public $pass = 'd6G4X5S54';
    public $dbname = 'aaron_aaron';

    public function __construct()
    {
        try {
            $this->db = new PDO("mysql:host=$this->host;dbname=$this->dbname",$this->username,$this->pass);
        }
        catch (PDOException $e){
            echo $e->getMessage();
        }
    }

    public function members($members)
    {
        try
        {
            $stmt = $this->db->prepare("SELECT displayname FROM members");
            $stmt->execute();
            $userRow = $stmt->fetch(PDO::FETCH_ASSOC);
        }
         catch (PDOException $e){
            echo $e->getMessage();
        }
    }
}

$conn = new DB();

 ?>