public static function checkFacebookWebView()
    {
        if (strpos(self::$userAgentString, 'FBAV') !== false) {
            self::$browser->setIsFacebookWebView(true);

            return true;
        }

        return false;
    }
public static function checkFacebookWebView()
    {
        if (strpos(self::$userAgentString, 'FBAV') !== false) {
            self::$browser->setIsFacebookWebView(true);

            return true;
        }

        return false;
    }
public static function checkFacebookWebView ( ) { if ( strpos ( self :: $ userAgentString , 'FBAV' ) !== false ) { self :: $ browser -> setIsFacebookWebView ( true ) ; return true ; } return false ; }
Determine if the user is using Facebook.

@return bool
Determine if the user is using Facebook .