Sample calling route from xsl

index.xsl

<?xml version="1.0" encoding="utf-8"?>

<xsl:stylesheet version="1.0"
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:php="http://php.net/xsl"
    exclude-result-prefixes="xsl php">

<xsl:output method="xml"
      omit-xml-declaration="yes"
      indent="yes"
      encoding="utf-8"/>


	<xsl:template match="/">
            <xsl:value-of
             select="php:function('Bundle\Liip\XsltBundle\XsltEngine::route_generate','hello',concat(string('{&quot;name&quot;:&quot;'),string(page/name),'&quot;}'))"/>
	</xsl:template>

</xsl:stylesheet>

XsltEngine.php

<?php

class XsltEngine implements EngineInterface
{
    //Snip..
    protected static $router_instance;
 
    public static function route_generate($name, $json)
    {
      $params = json_decode($json,true);
      return self::$router_instance->generate($name, $params);
    }

    public function __construct(ContainerInterface $container, LoaderInterface $loader, Kernel $kernel, Request $request, Router $router, $options = array())
    {
        //Snip..
        self::$router_instance = $router;
    }

    //Snip..
    public function render($name, array $parameters = array())
    {
        //Snip..

        $xsl = new \XSLTProcessor();
        $xsl->registerPHPFunctions();

        //Snip..
    }
}