MongoCursor::setFlag

(PECL mongo >=1.2.11)

MongoCursor::setFlag — Sets arbitrary flags in case there is no method available the specific flag

说明

public MongoCursor::setFlag ( int $flag [, bool $set = TRUE ] ) : MongoCursor

The MongoCursor class has several methods for setting flags on the query object. This method is available in case the MongoDB wire protocol has acquired a new flag, and the driver has not been updated with a method for this new flag. In all other cases, the method should be used. See the "See also" section for available methods.

参数

flag: Which flag to set. You can not set flag 6 (EXHAUST) as the driver does not know how to handle them. You will get a warning if you try to use this flag. For available flags, please refer to the wire protocol » documentation.
set: Whether the flag should be set (TRUE) or unset (FALSE).

返回值

Returns this cursor.

错误／异常

Shows a warning when an unsupport flag is attempted to be set.

更新日志

版本	说明
1.4.0	Support for flag 3 (OPLOG_REPLAY) is added. Versions before 1.4.0 would throw a warning saying that the flag is unsupported.

范例

Example #1 MongoCursor::setFlag() example


<?php
$m = new MongoClient( 'mongodb://localhost:13000', array( 'replSet' => 'seta' ) );
$c = $m->local->selectCollection( 'oplog.rs' );
$cursor = $c->find( array( 'ns' => 'demo.article', 'op' => 'i' ) );
$cursor->setFlag( 1, true ); // sets the tailable flag
$cursor->setFlag( 5, true ); // sets the await data flag
?>

参见

MongoCursor::tailable() - Sets whether this cursor will be left open after fetching the last results
MongoCursor::immortal() - Sets whether this cursor will timeout
MongoCursor::awaitData() - Sets whether this cursor will wait for a while for a tailable cursor to return more data
MongoCursor::partial() - If this query should fetch partial results from mongos if a shard is down
MongoDB core docs on» wire protocol query flags

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官方地址：https://www.php.net/manual/en/mongocursor.setflag.php

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MongoCursor::setFlag

说明

参数

返回值

错误／异常

更新日志

范例

参见

User Contributed Notes