How can the user effectively debug their PHP code to identify and resolve the issue with the mysqli connection in the Verbindung class?

To effectively debug the issue with the mysqli connection in the Verbindung class, the user can start by checking the connection parameters such as host, username, password, and database name. They should also ensure that the mysqli extension is enabled in their PHP configuration. Additionally, they can use error handling techniques like mysqli_error() or try-catch blocks to catch and display any connection errors. 

<?php
class Verbindung {
    private $host = 'localhost';
    private $username = 'root';
    private $password = '';
    private $database = 'my_database';
    private $connection;

    public function __construct() {
        $this->connection = new mysqli($this->host, $this->username, $this->password, $this->database);
        
        if ($this->connection->connect_error) {
            die("Connection failed: " . $this->connection->connect_error);
        }
        
        echo "Connected successfully";
    }
}

// Instantiate the Verbindung class to establish the connection
$verbindung = new Verbindung();
?>

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