ElggXMLElement.php

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<?php
class ElggXMLElement {
    private $_element;

    public function __construct($xml) {
        if ($xml instanceof SimpleXMLElement) {
            $this->_element = $xml;
        } else {
            // do not load entities
            $disable_load_entities = libxml_disable_entity_loader(true);

            $this->_element = new SimpleXMLElement($xml);

            libxml_disable_entity_loader($disable_load_entities);
        }
    }

    public function getName() {
        return $this->_element->getName();
    }

    public function getAttributes() {
        //include namespace declarations as attributes
        $xmlnsRaw = $this->_element->getNamespaces();
        $xmlns = array();
        foreach ($xmlnsRaw as $key => $val) {
            $label = 'xmlns' . ($key ? ":$key" : $key);
            $xmlns[$label] = $val;
        }
        //get attributes and merge with namespaces
        $attrRaw = $this->_element->attributes();
        $attr = array();
        foreach ($attrRaw as $key => $val) {
            $attr[$key] = $val;
        }
        $attr = array_merge((array) $xmlns, (array) $attr);
        $result = array();
        foreach ($attr as $key => $val) {
            $result[$key] = (string) $val;
        }
        return $result;
    }

    public function getContent() {
        return (string) $this->_element;
    }

    public function getChildren() {
        $children = $this->_element->children();
        $result = array();
        foreach ($children as $val) {
            $result[] = new ElggXMLElement($val);
        }

        return $result;
    }

    public function __get($name) {
        switch ($name) {
            case 'name':
                return $this->getName();
                break;
            case 'attributes':
                return $this->getAttributes();
                break;
            case 'content':
                return $this->getContent();
                break;
            case 'children':
                return $this->getChildren();
                break;
        }
        return null;
    }

    public function __isset($name) {
        switch ($name) {
            case 'name':
                return $this->getName() !== null;
                break;
            case 'attributes':
                return $this->getAttributes() !== null;
                break;
            case 'content':
                return $this->getContent() !== null;
                break;
            case 'children':
                return $this->getChildren() !== null;
                break;
        }
        return false;
    }
}