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db\QueryInterface exists()

exists() public abstract method

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

public abstract boolean exists ( $db = null )
$db	yii\db\Connection	The database connection used to execute the query. If this parameter is not given, the `db` 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-db-queryinterface.html#exists()-detail

doc_Yii

2016-10-30 16:59:25

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