The Collection's ReadConcern should only be applied as a default option value to operations when it is supported by the selected server. This is consistent with PHPLIB-200 for WriteConcern application.
- is depended on by
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                    PHPLIB-229 Operations should not accept unsupported read concern options -         
- Closed
 
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- is related to
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                    PHPLIB-130 Add support for the readConcern option -         
- Closed
 
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                    PHPLIB-200 Support sending writeConcern for commands that write -         
- Closed
 
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- related to
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                    PHPLIB-260 Duplicate server selection in Collection::findOne() -         
- Closed
 
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