This wiki explains how to add calculated fields into your Yii Framework 2.0 gridview with filtering and sorting.
This wiki explains how to add calculated fields into your Yii Framework 2.0 gridview with filtering and sorting.
This wiki explains how to add summary data from related models into your Yii Framework 2.0 gridview with filtering and sorting by the summary columns.
GridView show sum of columns in footer
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PHP
use yii\grid\DataColumn;