<?php

class User extends PropertyList {

    public function __construct()
    {

        $this->addProperty('username')
          ->setType('string')
          ->setMinLength(4)
          ->setMaxLength(20)
          ->setRegularExpression('/^[a-zA-Z0-9][a-zA-Z0-9.-]+[a-zA-Z0-9]$/')
        ;

        $this->addProperty('password')
          ->setType('string')
          ->setMinLength(8)
          ->setMaxLength(30)
          ->setFunctionSet(function($val){
            return sha1($val);
          })
          ->setFunctionGet(function(){
            return null;
          })
        ;

    }

}


$usr = new User();

try {
    $usr->username = 'blaa';
    $usr->password = 'dasjdhlahqu97';
    echo "successfully added username and password\n";
} catch(Exception $e) {
    echo "username or password not valid\n";
}

?>