How can the use of mysqli functions in PHP classes like "Verbindung" be optimized to avoid connection errors?

To optimize the use of mysqli functions in PHP classes like "Verbindung" to avoid connection errors, it is important to properly handle connection errors by implementing error checking and handling mechanisms. This can include checking the connection status before executing queries and gracefully handling any errors that may occur during the connection process.

class Verbindung {
    private $host = 'localhost';
    private $user = 'username';
    private $password = 'password';
    private $database = 'database';

    private $connection;

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

    public function query($sql) {
        $result = $this->connection->query($sql);

        if (!$result) {
            die("Query failed: " . $this->connection->error);
        }

        return $result;
    }

    public function close() {
        $this->connection->close();
    }
}