throw new InvalidArgumentException(sprintf('Invalid callback: %s.', print_r($callback, true)));
}
$this->hooks[$name][] = $callback;
}
public function getCallbacks($name)
{
return isset($this->hooks[$name]) ? $this->hooks[$name] : array();
}
public function fire($name)
{
foreach ($this->getCallbacks($name) as $callback) {
// prevent fatal errors, do your own warning or
// exception here as you need it.
if (!is_callable($callback)) {
continue;
}
call_user_func($callback);
}
}
}
/**
*
*/
$hooks = new Hooks();
$hooks->add('event', function () {
echo 'morally disputed.';
});
$hooks->add('event', function () {
echo 'explicitly called.';
});
$hooks->fire('event');