预定义常量

下列常量由此扩展定义，且仅在此扩展编译入 PHP 或在运行时动态载入时可用。

MONGO_STREAMS (int): Alias of MONGO_SUPPORTS_STREAMS
MONGO_SUPPORTS_STREAMS (int): 1 when compiled against PHP Streams (default since 1.4.0).
MONGO_SUPPORTS_SSL (int): 1 when OpenSSL is enabled and available.
MONGO_SUPPORTS_AUTH_MECHANISM_MONGODB_CR (int): 1 when MongoDB-Challenge/Reponse authentication is compiled in.
MONGO_SUPPORTS_AUTH_MECHANISM_MONGODB_X509 (int): 1 when x.509 authentication is compiled in.
MONGO_SUPPORTS_AUTH_MECHANISM_GSSAPI (int): 1 when GSSAPI authentication is compiled in.
MONGO_SUPPORTS_AUTH_MECHANISM_PLAIN (int): 1 when PLAIN authentication is compiled in.
MONGO_STREAM_NOTIFY_TYPE_IO_INIT (int)
MONGO_STREAM_NOTIFY_TYPE_LOG (int)
MONGO_STREAM_NOTIFY_IO_READ (int)
MONGO_STREAM_NOTIFY_IO_WRITE (int)
MONGO_STREAM_NOTIFY_IO_PROGRESS (int)
MONGO_STREAM_NOTIFY_IO_COMPLETED (int)
MONGO_STREAM_NOTIFY_LOG_INSERT (int)
MONGO_STREAM_NOTIFY_LOG_QUERY (int)
MONGO_STREAM_NOTIFY_LOG_UPDATE (int)
MONGO_STREAM_NOTIFY_LOG_DELETE (int)
MONGO_STREAM_NOTIFY_LOG_GETMORE (int)
MONGO_STREAM_NOTIFY_LOG_KILLCURSOR (int)
MONGO_STREAM_NOTIFY_LOG_BATCHINSERT (int)
MONGO_STREAM_NOTIFY_LOG_RESPONSE_HEADER (int)
MONGO_STREAM_NOTIFY_LOG_WRITE_REPLY (int)
MONGO_STREAM_NOTIFY_LOG_CMD_INSERT (int)
MONGO_STREAM_NOTIFY_LOG_CMD_UPDATE (int)
MONGO_STREAM_NOTIFY_LOG_CMD_DELETE (int)
MONGO_STREAM_NOTIFY_LOG_WRITE_BATCH (int)

Php/docs/mongo.constants