--TEST--
SolrDocument - new serialize api
--SKIPIF--
<?php if (PHP_VERSION_ID < 80100) die("skip PHP 8.1+ only"); ?>
--FILE--
<?php
$xml_contents = '<?xml version="1.0" encoding="UTF-8"?><solr_document><fields><field name="id"><field_value>parent_2</field_value></field></fields></solr_document>';
$xml_length = strlen($xml_contents);
$old = sprintf('C:12:"SolrDocument":%d:{%s}', $xml_length, $xml_contents);
$new = sprintf('O:12:"SolrDocument":1:{s:3:"xml";s:%d:"%s";}', $xml_length, $xml_contents);

/** @var SolrDocument $docOld */
$docOld = unserialize($old);
/** @var SolrDocument $docNew */
$docNew = unserialize($new);
var_dump(
	json_encode($docOld->toArray()) === json_encode($docNew->toArray())
);
var_dump($docNew->__serialize());
?>
--EXPECT--
bool(true)
array(1) {
  ["xml"]=>
  string(172) "<?xml version="1.0" encoding="UTF-8"?>
<solr_document>
  <fields>
    <field name="id">
      <field_value>parent_2</field_value>
    </field>
  </fields>
</solr_document>
"
}