What are the potential pitfalls of using XSLT for transforming XML data in PHP?

One potential pitfall of using XSLT for transforming XML data in PHP is that it can be resource-intensive and slower compared to other methods like using PHP's built-in XML manipulation functions. To mitigate this issue, consider caching the XSLT stylesheets or exploring alternative methods for XML transformation within PHP.

// Example of using PHP's built-in XML manipulation functions instead of XSLT
$xml = new DOMDocument();
$xml->load('data.xml');

$xsl = new DOMDocument();
$xsl->load('stylesheet.xsl');

$proc = new XSLTProcessor();
$proc->importStylesheet($xsl);

echo $proc->transformToXML($xml);