I have the following view-code for search key input from user:
       <?php echo CHtml::beginForm(Yii::app()->createUrl('home/search'),'get',array('accept-charset'=>'UTF-8', 
            'enctype'=>'multipart/form-data'));?>
                        <div class="search-box">
                            <div class="input-box left">
                                <input type="text" name="q" id="t-search" class="txt-box"
                                       placeHolder="<?php echo Yii::t('website', 'enter.search.keyword.here'); ?>"/>
                            </div>
                            <div class="left">
                                <input type="submit" id="b-search" class="btn main-bg" value="GO"/>
                            </div>
                        </div>
                        <?php echo CHtml::endForm();?>
In the controller i have following search action:
public function actionSearch($q)
{
    Yii::app()->theme = "website";
    $this->layout = '//layouts/main';
    $this->pageTitle = Yii::t('website', 'search.result');
    $result = Yii::app()->db->createCommand('call search_procedure('."'".$q."'".')')->queryAll() ;
    $this->render('search', array('result'=>$result));     
}
Code is working perfectly with English language, but when user want to search  with Arabic if we using var_dump($q); exit(); commands in search action, the $q variable is set to ØµØ¯Ø§Ø unknown characters so i couldn't use this parameter value in search  procedure. 
Can anyone help? thank you.