HomeXML Page 6 - XSL Transformation With PHP And Sablotron
Mistakes Happen - XML
So you've got your XML, and you've also got an XSLT stylesheet to format it. But how do you put the two of them together? Fear not - you can use PHP's Sablotron extension to perform XSLT transformation of XML data on the server. This article tells you how.
Like any good API, PHP's Sablotron extension comes with an excellent error-handling mechanism. I'll modify one of the examples above to illustrate:
// the files
$xmlfile = "person.xml";
$xslfile = "person.xsl";
// create the XSLT processor
$xslthandler = xslt_create() or die("Houston, we
have a problem. No XSLT
handler available. Mission aborted.");
// process the two files to get the desired output
// get and print the result
echo "Something bad just happened.n";
echo "Error code: " . xslt_errno($xslthandler)
echo "Error string: " . xslt_error($xslthandler) . "n";
// free the resources occupied by the handlers
Much of the code here has been culled from the previous examples. The difference:
this script includes a primitive error-handling mechanism, which checks whether or not the processing was successful, and returns an error code and message if not.
Both the xslt_errno() and xslt_error() functions accept a handle for the XSLT processor, and return the last error code and message generated by the processor. At least that's the theory - in my experiments with PHP 4.0.6, these functions failed to work as advertised.