php-bug-71996-soapclient.php

<?php
ini_set('display_errors', 'On');
error_reporting(E_ALL);

$item = array ('amount' => 1.2);
$data = array ('items' => array(&$item));

// ...

$item['amount'] = 1123.23;

// ...

$client = new SoapClient(null, array(
    'location'    => 'http://localhost/soapserver.php',
    'uri'         => '',
    'wsdl_cache'  => WSDL_CACHE_NONE,
));

echo $client->__soapCall('createItem', $data);