https://www.php.net/manual/zh/mongodb-driver-readconcern.isdefault.php
PHP: MongoDB\Driver\ReadConcern::isDefault - Manual
Checks if this is the default read concern
phpmongodbdriverisdefaultmanual
https://www.php.net/manual/en/mongodb-driver-writeconcern.isdefault.php
PHP: MongoDB\Driver\WriteConcern::isDefault - Manual
Checks if this is the default write concern
phpmongodbdriverwriteconcernisdefault
https://www.php.net/manual/en/reflectionproperty.isdefault.php
PHP: ReflectionProperty::isDefault - Manual
Checks if property is a default property
phpisdefaultmanual
https://www.php.net/manual/tr/mongodb-driver-writeconcern.isdefault.php
PHP: MongoDB\Driver\WriteConcern::isDefault - Manual
Checks if this is the default write concern
phpmongodbdriverwriteconcernisdefault
https://www.php.net/manual/it/mongodb-driver-writeconcern.isdefault.php
PHP: MongoDB\Driver\WriteConcern::isDefault - Manual
Checks if this is the default write concern
phpmongodbdriverwriteconcernisdefault