PHP Xml-RPC array and struct - php

Question

I am using XML-RPC Lib for PHP to use online signature.
This is the official doc :
$doc = array(
"content" => new xmlrpcval($doc_content, "base64"),
"name" => new xmlrpcval($doc_name, "string")
);
$language = "fr";
$signers = array(new xmlrpcval($signer, "struct"));
$request = array(
"documents" => new xmlrpcval(array(new xmlrpcval($doc, "struct")), "array"),
...
But now I want to put several documents in the request. Here is my code :
$docs = array();
foreach ($documents as $document)
{
// Signature field
$field = array(
'page' => new xmlrpcval($document->page, 'int'),
'x' => new xmlrpcval($document->x, 'int'),
'y' => new xmlrpcval($document->y, 'int'),
'label' => new xmlrpcval($document->nom, 'string'),
);
// Document
$docs []= new xmlrpcval(array(
'content' => new xmlrpcval($document->content, 'base64'),
'name' => new xmlrpcval($document->nom, 'string'),
'signatureFields' => new xmlrpcval($field, 'array'),
),'struct');
}
$request = array(
'documents' => new xmlrpcval($docs, 'array'),
And I catch this error :
Message: Call to a member function serialize() on a non-object
Does someone allready used this library ? Cause I am lost right now..

Answer 1

I have come to realise that even if we have an array still for using the phpxmlrpc library, we need to define the array individually, so if one has to pass an array here is what can be done,
$listids // this was my one dimensional array
$subs_list_array = array();
foreach ($listids as $id) {
$subs_list_array[] = new xmlrpcval($id, "int");
}
$msg = new xmlrpcmsg(
"contact.subscribe", array(
//Set user id
new xmlrpcval($registration_id, "int"),
new xmlrpcval($subs_list_array, "array")// <- Now I am able to use the array
)
);

Answer 2

For recursive encoding of php arrays, you can also use the php_xmlrpc_encode function that will recursively convert arbitrarily deep data structures