Call class function: Minpdo::connect();

Question

I have a class called MinPDO and within it a function called connect:

class MinPDO {

    public $sgbd = "mysql";
    public $dbhost = "localhost";
    public $dbname = "minpdo";
    public $dbuser = "root";
    public $dbpass = "";

    public function connect() {
        try {
            $conn = new PDO("{$this->sgbd}:host={$this->dbhost};dbname={$this->dbname};charset=utf8;", $this->dbuser, $this->dbpass);
            $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
            $conn->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
            return $conn;
        } catch (PDOException $ex) {
            echo "<br><b>Error:</b> " . $ex->getMessage();
            return false;
        }
    }
}

How can I call her that?

MinPDO::connect();

At the moment I’m doing so:

$mnpdo = new MinPDO();
$mnpdo->connect();

According to some programmers it would be more useful to call it the first way, but how do I do it?

Answer 1

::, indicates the call of a static or constant method or property. Simply add the key plavara static.

public static function connect()

To properly assemble the PDO constructor, you can transform the instance variables into static members as well or that means these properties will be available through the class and not an object in specific.

$conn = new PDO(self::$sgbd.":host=".self::$dbhost.";dbname=".self::$dbname.";charset=utf8;", self::$dbuser, self::$dbpass);

Related:

When to use self vs $this in PHP?

What is the name of the :: operator in PHP?