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Asked: 2026-06-16T23:00:04+00:00

I’ve used the following piece of code to transform XML to another XML file.

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I’ve used the following piece of code to transform XML to another XML file. But I’m trying to use XSLT to create a new XML file from a set of strings.

$xsl  = simplexml_load_file('template.xsl');
$xslt = new XSLTProcessor;
$xslt->setParameter('', 'foo', $foo);
$xslt->setParameter('', 'bar', $bar);
$xslt->setParameter('', 'test', $test);

$xslt->importStyleSheet($xsl);

$data = $xslt->transformToXML($xml);

So what I’m doing is passing parameters to template.xsl which creates nodes and the resulting output is passed to $data, which PHP then writes to a file.

But the example code that I have expects a XML file to be read first and saved to a variable, $xml. But I’m not reading in a XML file because I’m generating strings for the data and this generates a warning:

PHP Warning: XSLTProcessor::transformToXml() expects parameter 1 to be object, null given

I realise that I can use PHP to write the XML – http://www.developerfusion.com/code/3944/how-to-create-xml-files/ – But I would like to know how to do this with XSLT.

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1 Answer

  1. Editorial Team

    But I’m not reading in a XML file because I’m generating strings for
    the data and this generates 'PHP Warning:
    XSLTProcessor::transformToXml() expects parameter 1 to be object, null
    given'. I realise that I can use PHP to write the XML –
    http://www.developerfusion.com/code/3944/how-to-create-xml-files/ –
    But I would like to know how to do this with xslt.

    You can use any XML document to pass as the first parameter of XSLTProcessor::transformToXml()

    It can be an artificial document such as <t/> — loaded from file.

    In order not to load any additional XML file, one can use the already loaded XSLT file:

     $data = $xslt->transformToXML($xsl);

    In the transformation you will have a single template (matching /) and inside this template you’ll generate the wanted XML document – result.

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