GrumPHP\Linter\Xml\XmlLinter::registerXmlStreamContext PHP Method

registerXmlStreamContext() private method

This is added to fix a bug with remote DTDs that are blocking automated php request on some domains:
    private function registerXmlStreamContext()
    {
        libxml_set_streams_context(stream_context_create(['http' => ['user_agent' => 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:43.0) Gecko/20100101 Firefox/43.0']]));
    }