PHP to XML insert array - php

Question

I have an XML string that I have built up using the following example:
//add root
$Add = $dom->appendChild($dom->createElement('Add'));
//pCase
$pCase = $Add->appendChild($dom->createElement('pCase'));
//add elements
$LeadGenID = $pCase->appendChild($dom->createElement('LeadGenID'));
$LeadGenID->appendChild($dom->createTextNode('22'));
$Debtor = $pCase->appendChild($dom->createElement('Debtor'));
//address fields
$Addresses = $Debtor->appendChild($dom->createElement('Addresses'));
$Address = $Addresses->appendChild($dom->createElement('Address'));
//array of address objects should go here
$test1 = $dom->saveXML();
$sxe = simplexml_load_string($test1);
if ($sxe === false) {
echo 'Error while parsing the document';
exit;
}
$dom_sxe = dom_import_simplexml($sxe);
if (!$dom_sxe) {
echo 'Error while converting XML';
exit;
}
$dom = new DOMDocument('1.0', 'utf-8');
$dom_sxe = $dom->importNode($dom_sxe, true);
$dom_sxe = $dom->appendChild($dom_sxe);
echo $dom->save('application.xml');
This then outputs the following in my XML:
<Add>
<pCase>
<LeadGenID>22</LeadGenID>
<Debtor>
<Addresses><Address/></Addresses>
</Debtor>
</pCase>
I also need to output an array into this XML, so that the full output is as follows:
<Add>
<pCase>
<LeadGenID>22</LeadGenID>
<Debtor>
<Addresses>
<Address>
<Street>Some street</Street>
<Postcode>Some postcode</Postcode>
</Address>
</Addresses>
</Debtor>
</pCase>
I have tried to accomplish this using
$address_array = array (
$_POST['Street'] => 'Street',
$_POST['Postcode'] => 'Postcode'
);
$xml = new SimpleXMLElement('<Address/>');
array_walk_recursive($address_array, array ($xml, 'addChild'));
but at this point I am completely lost. The API I have been given is sparse on documentation to say the least but I'm getting closer with it, but I need to enter the address as an array for the gateway. I am new to PHP as I am primarily a frontend developer who has usually only done simple contact forms etc in PHP.
How can I output the XML example I've given above?
Thanks

Answer 1

Random weird stuff I've spot:
You start with new SimpleXMLElement('<Address/>') but your root node is <Addresses>
An $Address variable pops up from nowhere
A $dom object pops up from nowhere
You call createTextNode() which:
It isn't a SimpleXML method but a DOMDocument method
Expects a string as argument but it's fed with a SimpleXMLElement instance
Creates a text node

Answer 2

Have a look at http://www.lalit.org/lab/convert-php-array-to-xml-with-attributes/
It is a very small and simple to use library, if you just need array to xml.