<?php

/**
     * Create a simplified object suitable for straightforward
     * conversion to JSON. This is relatively expensive
     * due to the usage of reflection, but shouldn't be called
     * a whole lot, and is the most straightforward way to filter.
     */
    public function toSimpleObject()
    {
        $object = new stdClass();

        // Process all other data.
        foreach ($this->modelData as $key => $val) {
            $result = $this->getSimpleValue($val);
            if ($result !== null) {
                $object->$key = $this->nullPlaceholderCheck($result);
            }
        }

        // Process all public properties.
        $reflect = new ReflectionObject($this);
        $props = $reflect->getProperties(ReflectionProperty::IS_PUBLIC);
        foreach ($props as $member) {
            $name = $member->getName();
            $result = $this->getSimpleValue($this->$name);
            if ($result !== null) {
                $name = $this->getMappedName($name);
                $object->$name = $this->nullPlaceholderCheck($result);
            }
        }

        return $object;
    }