xslt_process() chucks an undefined (no error text) error when an xpath selection is not found. The result should be empty.

For instance, if you were trying to use this stylesheet:
_________________________________________________________ 
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
	<xsl:output method="text" omit-xml-declaration="yes"/> 
	<xsl:template match="/">

<xsl:for-each select="peas/porridge/ninedaysold">
<xsl:value-of select="." />
</xsl:for-each>

	</xsl:template>
</xsl:stylesheet>
________________________________________________________

on the following xml:
_________________________________________
<?xml version="1.0" encoding="UTF-8"?>
<peas>
  <porridge>
    <hot>yes</hot>
    <cold>no</cold>
    <inadish>no</inadish>
  </porridge>
</peas>
______________________________________________

The result should be nothing. Instead the process chucks an error.

If you use other XSL selections to find the same thing conditionally, such as xsl:if, the result is the same.

If XML elements are optional, then any file not containing them will cause an error with the current php_xslt.dll

The XML/XSL files that produce an error with PHP5x (latest snap). Have worked fine with the past several interations of PHP 4x.

PHP: 5x
Apache 2
Sablotron: 0.97

Thanks