Per PHPC-1231 and PHPLIB-368, the PHP driver needs some way to discern if a session is in an active transaction so it can determine whether it is permissible to inherit class-level read and write concerns for an operation.
- is depended on by
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                    PHPLIB-368 Operations executed within transaction should not inherit read/write concern -         
- Closed
 
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                    PHPC-1231 Add Session::isInTransaction to indicate whether a transaction is active -         
- Closed
 
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- is related to
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                    CDRIVER-2558 Implement Transactions spec -         
- Closed
 
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