Yii и PHP 5.3

Yii::app()->onBeginRequest = function($event){
    // …
};

$this->widget('zii.widgets.grid.CGridView',array(
    'dataProvider'=>$dataProvider,
    'columns'=>array(
        'title',
        array (
            'name'=>'created_on',
            'value'=> function($data){
                return date("M j, Y", $data->created_on);
            },
        ),
        array(
            'class'=>'CButtonColumn',
        ),
    ),
));