Dom validate schema does not accepts tag <xs:assert test="..." />, part of xsd
Is it possible for some oen to confirme if this bug is a libxml2 bug: https://bugs.php.net/bug.php?id=79391&edit=2
Is it possible for some oen to confirme if this bug is a libxml2 bug: https://bugs.php.net/bug.php?id=79391&edit=2