Removes callback from the list of functions called when a document-level event occurs. If doc is invalid, or callback is not on the callback list for the document, $ERROR is set and 0 is returned. If successful, the function returns the unique document identifier.

The doc parameter is a document identifier. The cbtype parameter needs to be a valid callback type (valid callbacks are listed under the doc_add_callback function). The callback parameter specifies the actual callback to remove.

Example

Refer to Callback Functions introduction for helpful overview information.