xmlrpcmsg::serialize() doesn't put params into serialized payload

Question

We use the php xmlrpc library to do xml rpc requests to an email provider.

These have always worked however when testing these features on a new environment (php 5.6 instead of 5.3) it seems that the xmlrpcmsg won't build in the parameter values when calling xmlrpcmsg::serialize(). Even though the params are clearly there when I var_dump the object.

The way I include the library is through including xmlrpc.inc (// Copyright (c) 1999,2000,2002 Edd Dumbill.) although I can't find any documentation which may tell me about any extensions that may be required or php version compatibility.

Example:

$this->msg = new xmlrpcmsg(
                    "contact.transactional", array(
                        // carer details
                        new xmlrpcval(
                            array(
                                "carer_id" => new xmlrpcval($data['Carer_ID'], "string"),
                                "email" => new xmlrpcval($data['CarerEmail'], "string"),
                            ), "struct"
                        ),
                        // campaign_id to be launched
                        new xmlrpcval($trigger['trigger_id'], "int"),
                        // transactional data to be passed into email template
                        new xmlrpcval(
                            array(
                                "carer_id" => new xmlrpcval($data['Carer_ID'], "int"), 
                                "baby_id" => new xmlrpcval($data['Baby_ID'], "string"),
                                "carer_email" => new xmlrpcval($data['CarerEmail'], "string"), 
                            ), "struct"
                        ),
                    )
                );

When I var_dump $this->msg->serialize() on my local system / the already live server

<methodcall>
<methodname>contact.transactional</methodname>
<params>
    <param>
    <value>
        <struct>
            <member>
                <name>email</name>
                <value>
                    <string>adam+testest@testest.co.uk</string>
                </value>
            </member>
        </struct>
    </value>
    <param>
    <value>
        <int>17458</int>
    </value>
    <param>
    <value>
        <struct>
            <member>
                <name>carer_id</name>
                <value>
                    <string>654321</string>
                </value>
            </member>
            <member>
                <name>baby_id</name>
                <value>
                    <string>123456</string>
                </value>
            </member>
            <member>
                <name>carer_email</name>
                <value>
                    <string>adam+testest@testest.co.uk</string>
                </value>
            </member>
        </struct>
    </value>
</params>
</methodcall>

When I var_dump $this->msg->serialize() on the new testing server

<methodcall>
<methodname>contact.transactional</methodname>
<params>
    <param>
    <value></value>
    <param>
    <value></value>
    <param>
    <value></value>
</params>
</methodcall>

Answer 1

Looks like I just needed to update the library to the latest version phpxmlrpc at github