PHP new server connection method giving me errors [closed] - php

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I've been trying to fix the connection script for my site to make it more secure, by storing the login for the server nd all the details in a separate config file.
My intention was to just call this file for the login details on the server connection function using $this ->, but it's giving me the following errors:
Warning: Undefined property: Database::$server in C:\Program Files\xampp\htdocs\xampp\ecommerce1\includes\conn.php on line 21
Warning: Undefined property: Database::$username in C:\Program Files\xampp\htdocs\xampp\ecommerce1\includes\conn.php on line 21
Warning: Undefined property: Database::$password in C:\Program Files\xampp\htdocs\xampp\ecommerce1\includes\conn.php on line 21
Warning: Undefined property: Database::$options in C:\Program Files\xampp\htdocs\xampp\ecommerce1\includes\conn.php on line 21
I will post both versions of my script as I had it before when it was working, and as I have it currently.
Working(prior version)
<?php
Class Database{
private $config = "mysql:host=localhost;dbname=mysite";
private $config = "root";
private $config = "password";
private $config = array(PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,);
protected $conn;
public function open(){
try{
$this->conn = new PDO($this->server, $this->username, $this->password, $this->options);
return $this->conn;
}
catch (PDOException $e){
echo "There is some problem in connection: " . $e->getMessage();
}
}
public function close(){
$this->conn = null;
}
}
$pdo = new Database();
?>
My attempt to update(broken code)
<?php
$config = include 'config.php';
Class Database{
public static function make($config)
{
try
{
return new PDO(
$config['connection'].':dbname='.$config['name'],
$config['username'],
$config['password'],
$config['options']
);
}
catch (PDOException $e){
echo "There is some problem in connection: " . $e->getMessage();
}
}
public function open(){
try{
$this->conn = new PDO($this->server, $this->username, $this->password, $this->options);
return $this->conn;
}
catch (PDOException $e){
echo "There is some problem in connection: " . $e->getMessage();
}
}
public function close(){
$this->conn = null;
}
}
$pdo = new Database();
?>
I don't understand why I can't store the login values on $this, like I did in the first example, is it because I'm calling these values from another file?
I thought I would include the config too just in case. Sorry for making this post so long
<?php
return [
'database' => [
'name' => 'db',
'username' => 'root',
'password' => 'password',
'connection' => 'mysql:host=localhost;dbname=db',
'options'=> [
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
]
]
]
?>