Un-register an item or items.

WordPress Error class.

Initializes the error.

Adds an error or appends an additional message to an existing error.

Adds data to an error with the given code.

Retrieves the first error code available.

Retrieves all error codes.

Retrieves the most recently added error data for an error code.

Gets a single error message.

Retrieves all error messages, or the error messages for the given error code.