I installed the Deprecated Calls plugin and it's telling me to change register_sidebar_widget() and register_widget_control(), essentially add wp_ first.

I did but I'm getting Missing argument 3 for wp_register_sidebar_widget() and wp_register_widget_control()

Is it ok if I put the default none for the 3rd arg?

1 Answer 1


The signature of newer function is different:

Can't simply replace one function with another here, need to re-order arguments accordingly.

  • Thanks for the reply! I have my function like this wp_register_sidebar_widget('w', 'my_widget'); so I guess I'll have to add an id now.
    – wpStudent
    Dec 2, 2010 at 16:26

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