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mongodb\Query exists()

exists() public method

Returns a value indicating whether the query result contains any row of data.

public boolean exists ( $db = null )
$db	yii\mongodb\Connection	The Mongo connection used to execute the query. If this parameter is not given, the `mongodb` application component will be used.
return	boolean	Whether the query result contains any row of data.

Links:

http://www.yiiframework.com/doc-2.0/yii-mongodb-query.html#exists()-detail

doc_Yii

2016-10-30 17:08:57

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