My First Class - Any Good?

CMellor · 07-13-2008, 08:25 PM

Hey,

I've never coded using PHP 5's OOP, and while I was planning a new project, I knew I was going to be using it, as well as using the MySQLi function. I've read loads of stuff now on OOP and I think I've got the hang of it, sorta, but at a newbie stage... ya know? lol

I whipped up this code, I just want you to tell me what I did right and wrong and how it can be improved:

PHP Code:


			
<?php
class math {

    const host = 'localhost';
    const user = 'root';
    const pass = 'blergh';
    const db = 'project';
    
    public function __construct() {
        // Start MySQLi connection
        $mysqli = new mysqli(self::host, self::user, self::pass, self::db);
        // Check if connect
        if(mysqli_connect_errno()) {
            throw new exception('MySQLi did not connect');
        }
    }
        
    public function plus($x, $y) {
        $this->x = $x;
        $this->y = $y;
        
        return $this->x + $this->y;
    }

}

$class = new math;

try {
    echo $class->plus(22, 55);
}
catch(exception $e) {
    echo $e->getMessage();
}

?>

Cheers!