The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime.
XSLT_OPT_SILENT 
    (integer)
   XSLT_SABOPT_PARSE_PUBLIC_ENTITIES 
    (integer)
   Tell Sablotron to parse public entities. By default this has been turned off.
XSLT_SABOPT_DISABLE_ADDING_META 
    (integer)
   Do not add the meta tag "Content-Type" for HTML output. The default is set during compilation of Sablotron.
XSLT_SABOPT_DISABLE_STRIPPING 
    (integer)
   XSLT_SABOPT_IGNORE_DOC_NOT_FOUND 
    (integer)
   XSLT_SABOPT_FILES_TO_HANDLER
    (integer)
   XSLT_ERR_UNSUPPORTED_SCHEME
    (integer)