Test case for https://bugs.php.net/bug.php?id=55348

php-55348.php

<?php

$request = <<<EOS
<?xml version="1.0" encoding="UTF-8"?>
<soap:Envelope
  xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"
  xmlns:ns1="http://schemas.example.com"
  xmlns:xsd="http://www.w3.org/2001/XMLSchema"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  soap:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
<soap:Body>
  <ns1:add>
    <param0 xsi:type="xsd:int">3</param0>
    <param1 xsi:type="xsd:int">4</param1>
  </ns1:add>
</soap:Body>
</soap:Envelope>
EOS;

function fromXml($xml) {
    // works fine if only thrown for second param:
    // if ('4' === strip_tags($xml))
    throw new SoapFault('Server', 'Conversion Fault');
}

function toXml() {}
function add($x, $y) {}

$server = new SoapServer(null, array(
    'uri'     => 'http://schemas.example.com',
    'typemap' => array(array(
        'type_name' => 'int',
        'type_ns'   => 'http://www.w3.org/2001/XMLSchema',
        'from_xml'  => 'fromXml',
        'to_xml'    => 'toXml',
    ))
));

$server->addFunction('add');
$server->handle($request);

This was fixed in PHP 8.2.0beta1: https://onlinephp.io/c/52b78