Description
Legacy PHP 8.1 applications can serialize values in a compact binary format instead of the standard PHP serializer. This PECL runtime extension is commonly used with caches, queues, and Redis or Memcached integrations to reduce storage and transfer size. It is dependency-only and has no separate launcher; PHP code and other extensions use it when enabled. Serialized data from untrusted sources should not be accepted without validation because object payloads and stale formats can create security or compatibility problems.