In one of my scripts, I make a function call to a function which contains the xslt_process() function. After this function, I am inserting an entry into my database for logging purposes.

test.php
--------
function html_transform($xsl, $xml) {
   if (!xslt_process($xsl, $xml, &$html)) {
      header("Status: 500 Server Error");
      echo xslt_error();
      echo "ERROR ".$php_error_msg;
      exit;
   }
   else {
      return($html);
   }
}

$xml = <loaded from file>;
$xsl = <loaded from file>;
$html = html_transform($xsl,$xml);
echo $html;
mysql_query("INSERT INTO table...");
echo mysql_insert_id();

the insert id is incrementing my 2, unless I disable the xslt_process() function.

Really strange and I think its a bug in the xslt_process() function.