XMLSecurityDSig::getXPathObj PHP Méthode

    private function getXPathObj()
    {
        if (empty($this->xPathCtx) && !empty($this->sigNode)) {
            $xpath = new DOMXPath($this->sigNode->ownerDocument);
            $xpath->registerNamespace('secdsig', XMLSecurityDSig::XMLDSIGNS);
            $this->xPathCtx = $xpath;
        }
        return $this->xPathCtx;
    }