PHP Base Class with simple custom extensions.

Base.php

<?php
/**
* Base class
*
* Quick and easy generic object that is more E_NOTICE friendly than normal.
*  - Variables that do not exist return NULL instead of E_NOTICE errors
*  - Adding of anonymous functions
*
* #############################################################################
* # Example 1 - Adding variables and cycling through them
* $b = new Base;
* $b->a = 1;
* $b->b = 2;
* $b->c = 3;
*
* foreach ($b AS $key=>$val) {
*    print "$key - $val\n";
* }
*
* # Example 1 output
* a - 1
* b - 2
* c - 3
* #############################################################################
* # Example 2 - adding a new method (php5.3+)
*
* $b        = new Base;
* $b->addme = function ($a, $b) { return $a+$b; };
* print "Sum of 2+2 =".$b->addme(2,2)."\n";
* print "Sum of 5+10 =".$b->addme(5,10)."\n";
*
* # Example 2 output
* Sum of 2+2 =4
* Sum of 5+10 =15
*
*
* @author Timothy M. Crider <[email protected]>
*/
class Base extends stdClass {
    /**
    * Make this object more E_NOTICE friendly
    */
    public function __get($var) {
        return (isset($this->$var)) ? $this->$var : NULL;
    }

    /**
    * Allow attaching methods to the base object
    */
    public function __call($key, $params) {
        if (!isset($this->{$key})) {
            throw new Zend_Exception("Call to undefined method ".get_class()."::{$key}");
        }

        $method = $this->{$key};
        return call_user_func_array($method, $params);
    }
}