xp_listen¶

xp_listen($listener)¶

Registers a new listener.

Listeners are special objects that register each publically available method as an executing process using the method name.

Note

Public methods that are declared with a prepended underscore “_” are ignored.

Parameters:	object – The object to register.
Return type:	void

<?php

class My_Listener extends \XPSPL\Listener
{
    // Register a process for the foo signal.
    public function foobar($signal) {
        echo 'foobar';
    }
}

xp_listener(new My_Listener());

xp_emit(XP_SIG('foobar'));

foobar