Php parameter to xslt

[LordLothar]

I read somewhere I could pass parameter like this:

$manufacturer = $_POST['manufacturer'];
$cameraType = $_POST['camType'];
$priceRange = $_POST['priceRange'];

$params = array('maker' => $manufacturer,'camType' => $cameraType,'pRange' => $priceRange);


$xsltTransformer=xslt\_create();
$htmlOutput=xslt\_process($xsltTransformer,"camera.xml","camera.xsl", NULL, array(), $params);

xslt\_free($xsltTransformer);

or

$htmlOutput=xslt_process($xsltTransformer,"camera.xml","camera.xsl", $params);

and my xslt will have this:

< xsl:param name="maker">All< /xsl:param>

..so on Which doesnt work and return always 'All'. I am using Sablotron library for transformation. How can I pass parameter correctly?