XSLTProcessor without validation

Hi, i still got no answer. Maybe i did not see it, altough i'm trying to read any single post. But may be i overlooked it due to high traffic. So now i have set up a filter (hopefully) copying answers to another folder. Here is the question: Is it possible to disable validation when using XSLTProcessor? If yes, how? When i use xsltproc, the command line tool for the libxslt, i can use the switch --novalid to subpress validation. This makes a huge difference in speed. Without validation it is fast enough. With validation it takes far too long to be acceptable. So how do i use XSLTProcessor from within PHP to achieve the same result as if using xsltproc --novalid? Regards Siegfried