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--TEST--
MongoDB\BSON\Undefined serialization (Serializable interface)
--SKIPIF--
<?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
<?php skip_if_php_version('>=', '7.4.0'); ?>
--FILE--
<?php
var_dump($undefined = MongoDB\BSON\toPHP(MongoDB\BSON\fromJSON('{ "undefined": {"$undefined": true} }'))->undefined);
var_dump($s = serialize($undefined));
var_dump(unserialize($s));
?>
===DONE===
<?php exit(0); ?>
--EXPECTF--
object(MongoDB\BSON\Undefined)#%d (%d) {
}
string(34) "C:22:"MongoDB\BSON\Undefined":0:{}"
object(MongoDB\BSON\Undefined)#%d (%d) {
}
===DONE===
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