What does it mean?
If PHP, enter the PHP to be evaluated.
How should I understand this sentence?
When I add new settings and chosed radio type.
Generally, adding settings has very little use unless you're making a plugin. Is that what you're trying to do? If so, could you elaborate more? When you select a radio type, it shouldn't have anything to do with PHP... :/
Oh, Oh, Thank you for your help.
But I still do not understand what is the meaning of evaluate
MyBB uses a php function called Eval to display the templates. You can read more about it over at PHP...
http://php.net/eval
Thank you very much!
I see.