yii\db\QueryTrait::orderBy PHP Method

Sets the ORDER BY part of the query.

See also: addOrderBy()

public orderBy ( string \| array \| yii\db\Expression $columns )
$columns	string \| array \| yii\db\Expression	the columns (and the directions) to be ordered by. Columns can be specified in either a string (e.g. `"id ASC, name DESC"`) or an array (e.g. `['id' => SORT_ASC, 'name' => SORT_DESC]`). The method will automatically quote the column names unless a column contains some parenthesis (which means the column contains a DB expression). Note that if your order-by is an expression containing commas, you should always use an array to represent the order-by information. Otherwise, the method will not be able to correctly determine the order-by columns. Since version 2.0.7, an [[Expression]] object can be passed to specify the ORDER BY part explicitly in plain SQL.

    public function orderBy($columns)
    {
        $this->orderBy = $this->normalizeOrderBy($columns);
        return $this;
    }

QueryTrait