Change timezone for CGridView - php

Question

I am currently working on a web application that will allow me to change the timezone during the execution. I started to test some cases, but it unfortunately doesn't work for the CGridView.
Working tests
This code here works for changing the timezone. I use the setTimeZone() function wich is a wrapper of the date_default_timezone_set() function.
Yii::app()->setTimeZone("America/Montreal");
echo "mtl:".date("Y-m-d H:i", 1396624849)."<br>";
Yii::app()->setTimeZone("Asia/Gaza");
echo "gz:".date("Y-m-d H:i", 1396624849);
The output is making a lot of sens (mtl:2014-04-04 11:20, gz:2014-04-04 18:20).
CGridView implementation
When I try the exact same line in a view with a CGridView, it doesn't work and displays only my default date format. Here is the code:
Yii::app()->setTimeZone("Asia/Gaza");
echo Yii::app()->getTimeZone();
$this->widget('zii.widgets.grid.CGridView', array(
'id'=>'reports-grid',
'dataProvider'=>$dataProvider,
'filter'=>$filtersForm,
'columns'=>array(
array(
'header'=>'Date',
'name'=>'inserted',
'type'=>'raw',
'value'=>'date(Yii::app()->params->dateformat, strtotime($data->inserted));'
),
),
));
The output date stays the same even if I change the time zone for America/Montreal.
What was tried so far
Adding the setTimeZone() function to a function with the date definition, as so:
'value'=>function($data){
Yii::app()->setTimeZone("America/Montreal");
return date(Yii::app()->params->dateformat, strtotime($data->inserted));
}
The result was the same as before.
Conclusion
Why is it not working? Is there a way to change the timezone dynamically in Yii? Is it possible that it doesn't work because the CGridView is built with eval operations?

Answer 1

Try this, it should work.
$dateTime = new DateTime();
$dateTime->setTimezone(new DateTimeZone('Asia/Gaza'));
$this->widget('zii.widgets.grid.CGridView', array(
'id'=>'reports-grid',
'dataProvider'=>$dataProvider,
'filter'=>$filtersForm,
'columns'=>array(
array(
'header'=>'Date',
'name'=>'inserted',
'type'=>'raw',
'value'=>function($data) use ($dateTime){
$dateTime->setTimestamp(strtotime($data->inserted));
return $dateTime->format(Yii::app()->params->dateformat);
}
))
));
By setting the timezone outsite of the function and using it inside, it should all work fine.

Answer 2

try this:
'value' => function($data){
Yii::app()->setTimeZone("Asia/Gaza");
return date(Yii::app()->params->dateformat, strtotime($data->inserted));
},