(PHP 4 >= 4.3.0)
xslt_setopt — Set options on a given XSLT processor
   xslt_setopt() sets the options specified by
   newmask on the given processor.
  
processorThe XSLT processor link identifier, created with xslt_create().
newmask
       newmask is a bitmask constructed with the
       following constants:
       
          XSLT_SABOPT_PARSE_PUBLIC_ENTITIES - Tell the
          processor to parse public entities. By default this has been turned
          off.
         
          XSLT_SABOPT_DISABLE_ADDING_META - Do not add
          the meta tag "Content-Type" for HTML output. The default is set
          during the compilation of the processor.
         
          XSLT_SABOPT_DISABLE_STRIPPING - Suppress the
          whitespace stripping (on data files only).
         
          XSLT_SABOPT_IGNORE_DOC_NOT_FOUND - Consider
          unresolved documents (the document() function) non-lethal.
         
   Returns the number of previous mask is possible, TRUE otherwise,
   FALSE in case of an error.
  
Example #1 xslt_setopt() Example
<?php
$xh = xslt_create();
// Tell Sablotron to process public entities
xslt_setopt($xh, XSLT_SABOPT_PARSE_PUBLIC_ENTITIES);
// Let's also ask it to suppress whitespace stripping
xslt_setopt($xh, xslt_getopt($xh) | XSLT_SABOPT_DISABLE_STRIPPING);
?>