XML.inc

<?php
class XML
{


    public static function nodeListToArray(DomNodeList $nodeList)
    {
        $retval = array();
        foreach ($nodeList as $item) {
            $retval[] = $item;
        }

        return $retval;

    }//end nodeListToArray()


    public static function getElementsByTagNames(array $tagNames, DomNode $elem)
    {
        $retval = array();

        foreach ($tagNames as $tagName) {
            $elements = $elem->getElementsByTagName($tagName);
            foreach ($elements as $element) {
                $retval[] = $element;
            }
        }

        return $retval;

    }//end getElementsByTagNames()


    public static function getElementsByAttributeValue(DomDocument $doc, DomNode $element, $attr, $value, $recursive=TRUE)
    {
        $nodes = array();
        if ($attr === '') {
            return $nodes;
        }

        $xp    = new DOMXPath($doc);
        $query = ($recursive === FALSE) ? '*' : '//*';
        $query = $query.'[@'.$attr.' = "'.$value.'"]';
        $nodes = $xp->query($query, $element);

        return $nodes;

    }//end getElementsByAttributeValue()


    public static function hasChildElements(DomNode $node)
    {
        if ($node->hasChildNodes() === TRUE) {
            foreach ($node->childNodes as $child) {
                if ($child->nodeType === XML_ELEMENT_NODE) {
                    return TRUE;
                }
            }
        }

        return FALSE;

    }//end hasChildElements()


    public static function getFirstChildElement(DomNode $node)
    {
        foreach ($node->childNodes as $child) {
            if ($child->nodeType === XML_ELEMENT_NODE) {
                return $child;
            }
        }

        return NULL;

    }//end getFirstChildElement()


    public static function getChildAt(DomNode $node, $position)
    {
        $pos = 0;
        foreach ($node->childNodes as $child) {
            if ($child->nodeType === XML_ELEMENT_NODE) {
                if ($pos === $position) {
                    return $child;
                }

                $pos++;
            }
        }

        return NULL;

    }//end getChildAt()


    public static function childCount(DomNode $node)
    {
        $count = 0;
        foreach ($node->childNodes as $child) {
            if ($child->nodeType === XML_ELEMENT_NODE) {
                $count++;
            }
        }

        return $count;

    }//end childCount()


    public static function traverseDom(DomElement $element)
    {
        $nodeInfo            = array();
        $nodeInfo['tagName'] = $element->tagName;

        if ($element->hasAttributes() === TRUE) {
            foreach ($element->attributes as $attribute) {
                $nodeInfo['attrs'][$attribute->name] = $attribute->value;
            }
        }

        if ($element->hasChildNodes() === TRUE) {
            foreach ($element->childNodes as $childNode) {
                if ($childNode->nodeType === XML_TEXT_NODE) {
                    $nodeInfo['value'] = trim($childNode->nodeValue);
                } else if ($childNode->tagName !== NULL) {
                    $nodeInfo['children'][] = self::traverseDOM($childNode);
                }
            }
        }

        return $nodeInfo;

    }//end traverseDom()


    public static function setAttributes(DomElement $element, array $attributes)
    {
        foreach ($attributes as $attrName => $attrValue) {
            $element->setAttribute($attrName, $attrValue);
        }

        return $element;

    }//end setAttributes()


}//end class


?>