(PECL mongo >=0.9.4)
MongoCursor::slaveOkay — Sets whether this query can be done on a slave
This method will override the static class variable slaveOkay.
If it is okay to query the slave.
Returns this cursor.
Throws MongoCursorException if this cursor has started iterating.
例1 MongoCursor::slaveOkay() example
<?php
MongoCursor::$slaveOkay = false;
// cannot query slave
$cursor = $collection->find();
// can query slave
$cursor = $collection->find()->slaveOkay();
MongoCursor::$slaveOkay = true;
// can query slave
$cursor = $collection->find();
// cannot query slave
$cursor = $collection->find()->slaveOkay(false);
?>