Description

Using an anonymous class object with PhpRedis causes a segmentation fault during the serialization flow.

The following code reproduces the issue:

<?php

$redis = new Redis();
$redis->connect('127.0.0.1', 6379);

$redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_PHP);

$obj = new class() {};

$redis->set('payload', $obj);
$redis->get('payload');

Expected behavior

PhpRedis should throw a normal PHP exception/error similar to:

Serialization of 'class@anonymous' is not allowed

Actual behavior

PHP crashes with a segmentation fault.