The wire version check is for the startAtOperationTime $changeStream option. Operation time itself is supported since MongoDB 3.6 (introduced with sessions and casual consistency).

Remove MMAPv1 procParams from MO configs (excluding "old" configs). MongoDB 4.2+ no longer parses these options and will error on startup. See: https://docs.mongodb.com/master/release-notes/4.2/#mmapv1-specific-configuration-options

Fixes from PHPLIB-442 and PHPLIB-441 allow this to pass.

Since consecutive calls to rewind() are NOPs, this must invoke next() to trigger a second resume. Additionally, leave a note about how this test might change with PHPLIB-448.

PR #625 was merged prematurely. The related test actually does not pass on 4.1.7+.

This reverts commit d47fa07e.

The fix from PHPLIB-442 also allows this test to pass.

This extracts common logic in next() and rewind() to a new method, which is now also called by resume() after it rewinds the internal iterator.