PHP Manual . Prev . ... PHP 4 >= 4.0.3) xslt_error -- Return a error string . mixed xslt_error ( resource xh) . Return a string describing the last error that occured on the passed XSLT processor. ... Handling errors using the xslt_error() and xslt_errno() functions. <?php $xh = xslt_create(); $result = xslt_process($xh, 'dog.xml', 'pets.xsl'); if (!$result) { die(sprintf("Cannot process XSLT document [%d]: %s", xslt_errno($xh), xslt_error($xh))); } print($result); xslt_free($xh); ?> ...