 Get the name of the dispatcher. (Previous)
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(Next) Remove an observer.
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Event_Dispatcher::addObserver
Synopsis
void Event_Dispatcher::addObserver (
mixed $callback
, string $nName = EVENT_DISPATCHER_GLOBAL
, string $class = ''
)
Description
Adds a new observer to the dispatcher.
Observers are PHP callbacks. That means you may either pass a function name as a string or an array containing an object or class and a method to call.
The callback is used as a signature for the observer, which allows you to remove it by passing the exact same parameters to removeObserver().
Parameter
-
mixed $callback
Callback to notity, may either be a string containing the name of a global function or an array containing class or object and the name of the method to call.
-
string $nName = EVENT_DISPATCHER_GLOBAL
Acts as a filter: notify the observer only if the notification name matches the name passed in this parameter. Use EVENT_DISPATCHER_GLOBAL if the observer should be notified regardles of the notification name.
-
string $class = ''
Acts as a filter: notify the observer only if the sender of the notification matches the class passed in this parameter.
Return value
void
Note
This function can not be called statically.
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Get the name of the dispatcher. (Previous)
|
(Next) Remove an observer.
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