Function key-exists: The first argument should be either a string or an integer

[NabiKAZ]

Hi,
If open site for first time and didn't set any cookie and session, and also if didn't set any Accept-Language for browser. When open site show this error in debug mode:

PHP warning
key_exists() [function.key-exists]: The first argument should be either a string or an integer
...\protected\modules\translate\components\MPTranslate.php(201)

188         function getLanguage(){
189         $key=self::ID;
190         if(($language=@$this->_cache['language'])!==null)
191             return $language;
192         elseif(Yii::app()->getSession()->contains($key))
193             $language=Yii::app()->getSession()->get($key);
194         elseif(isset($_POST[$key]) && !empty($_POST[$key]))
195             $language=$_POST[$key];
196         elseif(isset($_GET[$key]) && !empty($_GET[$key]))
197             $language=$_GET[$key];
198         else
199             $language=Yii::app()->getRequest()->getPreferredLanguage();
200         
201         if(!key_exists($language,$this->acceptedLanguages)){
202             if($language===Yii::app()->sourceLanguage)
203                 $language=$this->defaultLanguage;
204             elseif(strpos($language,"_")!==false){
205                 $language=substr($language,0,2);
206                 if(!key_exists($language,$this->acceptedLanguages))
207                     $language=$this->defaultLanguage;
208             }
209         }
210         return $language;
211     }

And in no debug mode:

CException
Property "CAttributeCollection.name" is not defined.

This bug is critical, because some bot didn't set Accept-Language in header request, for example I have problem with google crawler for fetch site.

You can test it with CURL without any parameter for headers:
curl www.sitename.com

I resolve this bug for put @ sign before if(!key_exists in line 201, 206 in above code.

Thanks