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db\Query queryScalar()

queryScalar() protected method

Queries a scalar value by setting select() first.

Restores the value of select to make this query reusable.

protected boolean\|string queryScalar ( $selectExpression, $db )
$selectExpression	string\|yii\db\Expression
$db	yii\db\Connection\|null

Links:

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

doc_Yii

2016-10-30 16:59:04

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