mongodb\ActiveQuery 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.

doc_Yii
2016-10-30 17:07:22
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