class TimeZoneKeeper extends CComponent{

	public $userTimezone;
	public $serverTimeZone;


	public function init(){
		//settiamo il server di default a UTC per rendere l'implementazione  indipendente
		//dal settaggio del server.
		Yii::app()->setTimeZone("UTC");	
		$this->serverTimeZone = new DateTimeZone(Yii::app()->getTimeZone());
	}

	public function serverToUser($timestamp){
		$this->userTimezone = new DateTimeZone(Yii::app()->user->tz);
		$serverDateTime = new DateTime("@".$timestamp);
		$offset = $this->userTimezone->getOffset($serverDateTime);
		return ($serverDateTime->format('U') + $offset);
	}

	public function userToServer($timestamp){
		$this->userTimezone = new DateTimeZone(Yii::app()->user->tz);
		$userDateTime = new DateTime("@".$timestamp);
		$offset = $this->userTimezone->getOffset($userDateTime);
		return ($userDateTime->format('U') - $offset);
	}

}

		$this->render('admin',array(
			'dataProvider'=>$dataProvider,
            'product'=>$product
		));

<?php $this->widget('zii.widgets.grid.CGridView', array(
	'dataProvider'=>$dataProvider,
	'columns'=>array(
		'prYear',
		'prPrice',
		array(
			'class'=>'CButtonColumn',
            'template'=>'{update}   {delete}',
		),
	),
)); ?>

    $this->widget('zii.widgets.grid.CGridView', array(
    'dataProvider' => $model->search(),
    'filter' => $model,
    'columns' => array(

<form id="asd" action="/blog/index.php?r=ciao/mondo&ciao=asdf&0=aaswdf&1=aw" method="get">
<div style="display:none">
<input type="hidden" value="ciao/mondo" name="r" /> 
<input type="hidden" value="asdf" name="ciao" />
<input type="hidden" value="aaswdf" name="0" />
<input type="hidden" value="aw" name="1" />
</div>
<input type="text" value="" name="nome" id="nome" />
</form>

           <?php
                echo CHtml::beginForm(
                        array('ciao/mondo', 'ciao' => 'asdf', 'aaswdf', 'aw'),
                        'post',
                        array('id' => 'asd')
                );
            ?>
            <?php echo CHtml::textField('nome'); ?>
            <?php echo CHtml::endForm(); ?>

<form id="asd" action="/blog/index.php?r=ciao/mondo&ciao=asdf&0=aaswdf&1=aw" method="post">
<input type="text" value="" name="nome" id="nome" />
</form>

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