source: sandbox/2.4.1-3/prototype/rest/hypermedia/hypermedia.php @ 6395

<?php

require_once('collection.php');

class Hypermedia {

    public $collection;
    public $version = '0.1';

    function setCollection($collection) {
        $this->collection = $collection;
    }

    function getCollection() {
        return $this->collection;
    }

    function getHypermedia($accept = 'json') {

        $data = get_object_vars($this);

        switch ($accept) {
            case 'json':
                return json_encode($data);
                break;
            case 'xml':
                return $this->generateValidXmlFromArray($data);
            default :
                return json_encode($data);
        }
    }

// functions adopted from http://www.sean-barton.co.uk/2009/03/turning-an-array-or-object-into-xml-using-php/

    function generateValidXmlFromObj(stdClass $obj, $node_block = 'nodes', $node_name = 'node') {
        $arr = get_object_vars($obj);
        return self::generateValidXmlFromArray($arr, $node_block, $node_name);
    }

    function generateValidXmlFromArray($array, $node_block = 'nodes', $node_name = 'node') {
        $xml = '<?xml version="1.0" encoding="UTF-8" ?>';

        $xml .= '<' . $node_block . '>';
        $xml .= self::generateXmlFromArray($array, $node_name);
        $xml .= '</' . $node_block . '>';

        return $xml;
    }

    function generateXmlFromArray($array, $node_name) {
        $xml = '';

        if (is_array($array) || is_object($array)) {
            foreach ($array as $key => $value) {
                if (is_numeric($key)) {
                    $key = $node_name;
                }

                $xml .= '<' . $key . '>' . self::generateXmlFromArray($value, $node_name) . '</' . $key . '>';
            }
        } else {
            $xml = htmlspecialchars($array, ENT_QUOTES);
        }

        return $xml;
    }

}

?>