XMLSecurityDSig::canonicalizeData PHP Méthode

    private function canonicalizeData($node, $canonicalmethod, $arXPath = null, $prefixList = null)
    {
        $exclusive = false;
        $withComments = false;
        switch ($canonicalmethod) {
            case 'http://www.w3.org/TR/2001/REC-xml-c14n-20010315':
                $exclusive = false;
                $withComments = false;
                break;
            case 'http://www.w3.org/TR/2001/REC-xml-c14n-20010315#WithComments':
                $withComments = true;
                break;
            case 'http://www.w3.org/2001/10/xml-exc-c14n#':
                $exclusive = true;
                break;
            case 'http://www.w3.org/2001/10/xml-exc-c14n#WithComments':
                $exclusive = true;
                $withComments = true;
                break;
        }
        if (is_null($arXPath) && $node instanceof DOMNode && $node->ownerDocument !== null && $node->isSameNode($node->ownerDocument->documentElement)) {
            /* Check for any PI or comments as they would have been excluded */
            $element = $node;
            while ($refnode = $element->previousSibling) {
                if ($refnode->nodeType == XML_PI_NODE || $refnode->nodeType == XML_COMMENT_NODE && $withComments) {
                    break;
                }
                $element = $refnode;
            }
            if ($refnode == null) {
                $node = $node->ownerDocument;
            }
        }
        return $node->C14N($exclusive, $withComments, $arXPath, $prefixList);
    }