[PHP] xsltprocessor

[Allan Jardine]

Hello all,

I'm having a real problem with applying an xslt transform to a  
selected part of an xml document. I load the xml document using  
simplexml_load_file, and the same with the xsl file. Using the xpath  
function for simplexml I select a part of the xml document and store  
it in a different variable. I then apply the xml transform to that  
variable, however the transform actually applies to the whole xml  
document, rather than just the selected part in the new variable. I  
can't figure out why it does this. Does anyone know? The code I'm  
used is below.


   $xml = simplexml_load_file ( 'simple_test.xml' );

if ( isset ( $_GET['s'] ) && isset ( $_GET['ss'] ) )
foreach ( $xml->xpath( "//[EMAIL PROTECTED]'".$_GET['s']."']/ 
[EMAIL PROTECTED]'".$_GET['ss']."']" ) as $subsection)

$content = $subsection;

$xsl = simplexml_load_file( 'simple_test.xsl' );
$proc = new XsltProcessor();
$proc->importStylesheet($xsl);
echo $proc->transformToXML($content);

Thanks for any help
Allan

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Re: [PHP] xsltprocessor

[Allan Jardine]

Hi,


you might start by using some braces to explicitly delineate the
if and foreach block? ...personally I'm not sure exactly what your  
code

should be doing.


Putting the brackets in doesn't make any difference. That part of the  
code appears to work perfectly - what it does is scan through the xml  
document looking for a 'section' tag with the attribute id equal to  
the get variable 's' and with a 'subsection' tag with attribute id  
equal to the get variable 'ss'. Doing echo $content->asXML(); right  
after the if and foreach shows that the $content variable does indeed  
hold the right content.


The problem is then applying the xsl transform to what is in that  
variable. It appears to transform everything in $xml, rather than  
just what is in $content.



   $xml = simplexml_load_file ( 'simple_test.xml' );
if ( isset ( $_GET['s'] ) && isset ( $_GET['ss'] ) ) {
foreach ( $xml->xpath( "//[EMAIL PROTECTED]'".$_GET['s']."']/  
[EMAIL PROTECTED]'".$_GET['ss']."']" ) as $subsection) {

$content = $subsection;
}
}
$xsl = simplexml_load_file( 'simple_test.xsl' );
$proc = new XsltProcessor();
$proc->importStylesheet($xsl);
echo $proc->transformToXML($content);


Thanks
Allan

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Re: [PHP] xsltprocessor

[Allan Jardine]

Hi,

The problem is then applying the xsl transform to what is in that  
variable. It appears to transform everything in $xml, rather than  
just what is in $content.


Managed to solve my own problem... Using:

$content = $proc->transformToXML(DomDocument::loadXML($content));

To create an xml dom model that can be operated on by the xslt  
processor. I still have no idea why it would spit out the whole xml  
document if its not done like that - but never mind...


Thanks
Allan

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