Subdocument upsert() fails for array element ("list[1]", etc)

PHP SDK
1

First off, the environment:

Couchbase Server: 4.5.1-2844
PHP: 7.1.1
PHP SDK: 2.2.4

The issue that I’m seeing is that a subdocument upsert() will fail when given an array element path (such as “list[1]”). Assume the following example document:

{“list”: [“Item 1”, “Item 2”]}

This operation will fail:

$bucket->mutateIn(‘testdocument’)->upsert(‘list[1]’, ‘Modified item’)->execute();

The main error code is 73 (LCB_SUBDOC_MULTI_FAILURE), while the path’s error code is 65 (LCB_SUBDOC_PATH_EINVAL).

This seems wrong. If I use replace(), it works. If I upsert(‘some-other-key’, ‘some data’), it works. It seems to only blow up when provided an array element. What is going on here?

2

because upsert works with dictionaries (JSON objects), if you want to work with arrays, use array* methods of the builder