php:function in XSLT to pass arguments directly, not in an array

Question

I am having issues with how XSLT is passing arguments to my PHP function. I am using <xsl:value-of select="php:function('form::validate_add',@name,type,message)" /> to pass the attribute name, element type, and element message to a php function but the arguments being passed are large arrays including useless information for my needs.

XML:

<element name='text2-1'>
    <type>required</type>
    <message>The field Enter Text is required</message>
</element>
<element name='textarea'>
    <type>required</type>
    <message>The textarea is required</message>
</element>

XSLT:

<xsl:for-each select="element">
   <xsl:value-of select="php:function('form::validate_add',@name,type,message)" />
</xsl:for-each>

PHP:

public static function validate_add($name, $type, $message=NULL) {
#tmp
print_r($name);
}

Returning:

Array
(
    [0] => DOMAttr Object
        (
            [name] => name
            [specified] => 1
            [value] => text2-1
            [ownerElement] => (object value omitted)
            [schemaTypeInfo] => 
            [nodeName] => name
            [nodeValue] => text2-1
            [nodeType] => 2
            [parentNode] => (object value omitted)
            [childNodes] => (object value omitted)
            [firstChild] => (object value omitted)
            [lastChild] => (object value omitted)
            [previousSibling] => 
            [attributes] => 
            [ownerDocument] => (object value omitted)
            [namespaceURI] => 
            [prefix] => 
            [localName] => name
            [baseURI] => 
            [textContent] => text2-1
        )

)

So it looks like the "value" key of the array is the correct value that I am after. Is there any way to pass this argument directly rather than passing the entire array and having to extract the correct value from the array in the PHP function? I would prefer not to alter my php function or add a new function.

Answer 1

如果要从 XPath/XSLT 传递 DOM 节点的字符串值，请使用<xsl:value-of select="php:function('form::validate_add', string(@name), string(type), string(message))" />

Answer 2

Hmmm, didn't work for me...for whatever reason. nearly, but adding text() as well fixed it...

<xsl:value-of select="php:function ('ucfirst', string(path/element/text()))"/>

Need to add PHP namespace to stylesheet declaration:

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