In legacy PHP SDKs (v2 and v3) of Couchbase, there is a configuration option couchbase.encoder.compression that allows
compression of data using a specified algorithm. This option is not forward-compatible with the new PHP SDK v4. When
data is inserted using PHP SDK v3 with compression enabled, it cannot be retrieved using PHP SDK v4.
Steps to reproduce the issue: https://github.com/deminy/couchbase-issues/tree/couchbase4/issue-6