<?php

class UserRegistration {
    const ACTIVATE = false;
    public function __construct($username, $password, $email) {
        $this->username = $username;
        $this->password = $password;
        $this->email = $email;
        try {
            $this->checkUser();
            $this->checkEmail();
            $this->insert();
        }
        catch(Exception $e) {
            echo $e->getMessage();
        }
    }
    public insert() {
        $activationkey = 0;
        if(self::ACTIVATE) $activationkey = rand(pow(10, 5), pow(10,6) - 1);
        mysql_query("
            INSERT INTO users   (email, username, password, activation)
            VALUES          ('".mysql_real_escape_string($this->email)."', '".mysql_real_escape_string($this->username)."', '".sha1($this->password)."', ".$activationkey.")");
        echo 'Registriert';
    }
    public function checkUser() {
        $data = mysql_fetch_array(mysql_query("SELECT count(*) AS count FROM users WHERE username = '".mysql_real_escape_string($this->username)."'"));
        if($data['count'] > 0) throw new Exception('Username ist vorhanden');
    }
    public function checkEmail() {
        $data = mysql_fetch_array(mysql_query("SELECT count(*) AS count FROM users WHERE email = '".mysql_real_escape_string($this->email)."'"));
        if($data['count'] > 0) throw new Exception('Email ist vorhanden');
    }
}
?>