hasAttributeNS example

// We have to store them in an array, as replacing nodes will             // confuse the DOMNodeList later             foreach ($dom->childNodes as $node) {
                if ($node instanceof DOMElement && $node->namespaceURI === self::XML_NAMESPACE) {
                    $namespaceChildNodes[] = $node;
                }
            }

            foreach ($namespaceChildNodes as $node) {
                switch ($node->localName) {
                    case 'const':
                        if (!$node->hasAttributeNS(self::XML_NAMESPACE, 'name')) {
                            throw new Zend_Config_Exception("Misssing 'name' attribute in 'const' node");
                        }

                        $constantName = $node->getAttributeNS(self::XML_NAMESPACE, 'name');

                        if (!defined($constantName)) {
                            throw new Zend_Config_Exception("Constant with name '$constantName' was not defined");
                        }

                        $constantValue = constant($constantName);

                        

return $map;
            default:
                throw new \InvalidArgumentException(sprintf('Unknown tag "%s" used in file "%s". Expected "bool", "int", "float", "string", "list", or "map".', $node->localName, $path));
        }
    }

    private function isElementValueNull(\DOMElement $element): bool
    {
        $namespaceUri = 'http://www.w3.org/2001/XMLSchema-instance';

        if (!$element->hasAttributeNS($namespaceUri, 'nil')) {
            return false;
        }

        return 'true' === $element->getAttributeNS($namespaceUri, 'nil') || '1' === $element->getAttributeNS($namespaceUri, 'nil');
    }

    /** * Parses the deprecation elements. * * @throws \InvalidArgumentException When the XML is invalid */
    

return $map;
            default:
                throw new \InvalidArgumentException(sprintf('Unknown tag "%s" used in file "%s". Expected "bool", "int", "float", "string", "list", or "map".', $node->localName, $path));
        }
    }

    private function isElementValueNull(\DOMElement $element): bool
    {
        $namespaceUri = 'http://www.w3.org/2001/XMLSchema-instance';

        if (!$element->hasAttributeNS($namespaceUri, 'nil')) {
            return false;
        }

        return 'true' === $element->getAttributeNS($namespaceUri, 'nil') || '1' === $element->getAttributeNS($namespaceUri, 'nil');
    }

    /** * Parses the deprecation elements. * * @throws \InvalidArgumentException When the XML is invalid */