xslt_error

<?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);
?>