MongoDB\Driver\Server
PHP Manual

MongoDB\Driver\Server::executeCommand

(mongodb >=1.0.0)

MongoDB\Driver\Server::executeCommandExecute a database command on this server

Açıklama

final public MongoDB\Driver\Cursor MongoDB\Driver\Server::executeCommand ( string $db , MongoDB\Driver\Command $command [, MongoDB\Driver\ReadPreference $readPreference ] )

Executes command on this server.

Bilginize:

The readPreference parameter does not control the server to which the driver issues the command; the command will always be executed on this server object. Instead, it may be used when issuing the command to a secondary (from a replica set connection, not standalone) or mongos node to ensure that the driver sets the wire protocol accordingly or adds the read preference to the command document, respectively.

Değiştirgeler

db (string)

The name of the database on which to execute the command.

command (MongoDB\Driver\Command)

The MongoDB\Driver\Command to execute.

readPreference

Optionally, a MongoDB\Driver\ReadPreference to route the command to. If none given, defaults to the Read Preferences set by the MongoDB Connection URI.

Dönen Değerler

Returns MongoDB\Driver\Cursor on success.

Hatalar/İstisnalar

Notlar

Bilginize:

This method does not take a MongoDB\Driver\WriteConcern parameter. For write commands (e.g. » findAndModify in MongoDB 3.2+), the write concern should be included in the command document itself.

It is the caller's responsibility to ensure that the server is capable of executing the command. For example, executing a write operation on a secondary (excluding its "local" database) will fail.

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MongoDB\Driver\Server
PHP Manual