Eryr

    /**
     * Magic __call method
     *
     * Attempt to set/get a property. Only supports all-lowercase properties.
     * This differs from __set() and __get(), as we want to be able to have custom get()
     * and set() methods (e.g. setPassword() encrypts the password before setting it).
     *
     * @access  public
     * @param   string  $method
     * @param   mixed   $args
     * @return  void|mixed
     */
    public function __call($method, $args)
    {
        //Find words by camelCase (e.g. setUsername, getUserGroup)
        $method_words = preg_split('/(?=[A-Z])/', $method);
        $method_name = $method_words[0];

        //Remove the method name from method_words
        unset($method_words[0]);

        //The remaining method_words make up the property name
        //UserGroup becomes user_group
        $property = strtolower(implode('_', $method_words));

        //Property doesn't exist
        if (! property_exists($this, $property))
        {
            show_error("<strong>Fatal Error:</strong> Tried to call {$method}() on " . __CLASS__ . ". Property '{$property}' doesn't exist.");
        }

        //Set() methods
        if ($method_name == 'set')
        {
            //More than one argument was given
            if (count($args) > 1)
            {
                show_error("<strong>Fatal Error:</strong> Tried to set " . __CLASS__ . "->{$property}. 1 argument expected; " . count($args) . " given.");
            }

            $this->$property = $args[0];
        }

        //Get() methods
        if ($method_name == 'get')
        {
            return $this->$property;
        }
    }