Which of the following is a newbie in the tp framework who accepts all post functions?

In the tp framework, there is a new user who accepts all the post functions. The common method intelligence is one by one. $ ac_title $ _ POST [& #039; ac_title & #039;]; in the tp framework, there is a function that accepts all post requests. Which of the following is a newbie? $ Ac_title = $ _ POST ['ac _ title'];

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In the tp framework, there is a function that accepts all post requests. Which of the following is a newbie?$ Ac_title = $ _ POST ['ac _ title'];

The create () method of the Model to automatically create data objects.

I ('Post. ac_title ')

I ('Post. ac_title ')

Is this?
I ('Post .');
It seems that there is a point