Article content special characters This problem is node titles and content text.

' character shows like this  mark.

Poland characters there is only ? characters. Example: ŁOŚĆ shows ????

But breadcrumbs shows ' character like this: &#039;

I have trying this: 

 

in article page but not working. Other pages doesn't work either. There I trying this method:

description, ENT_QUOTES, 'UTF-8');?>

But nothing work. So how I can do my page working with all special characters?
There are several possible reasons for that behavior. The most likely one is that your database encoding does not support these characters.

You should use a UTF8 encoding as standard character set (collation).