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<?php |
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namespace ZfcUser\EventManager; |
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use Traversable; |
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use Zend\EventManager\EventManagerAwareInterface; |
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use Zend\EventManager\EventManagerInterface; |
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use Zend\EventManager\EventManager; |
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use Zend\EventManager\SharedEventManager; |
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abstract class EventProvider implements EventManagerAwareInterface |
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{ |
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/** |
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* @var EventManagerInterface |
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*/ |
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protected $events; |
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/** |
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* Set the event manager instance used by this context |
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* |
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* @param EventManagerInterface $events |
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* @return mixed |
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*/ |
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public function setEventManager(EventManagerInterface $events) |
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{ |
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$identifiers = array(__CLASS__, get_called_class()); |
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if (isset($this->eventIdentifier)) { |
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if ((is_string($this->eventIdentifier)) |
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|| (is_array($this->eventIdentifier)) |
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|| ($this->eventIdentifier instanceof Traversable) |
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) { |
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$identifiers = array_unique(array_merge($identifiers, (array) $this->eventIdentifier)); |
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} elseif (is_object($this->eventIdentifier)) { |
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$identifiers[] = $this->eventIdentifier; |
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} |
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// silently ignore invalid eventIdentifier types |
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} |
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$events->setIdentifiers($identifiers); |
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$this->events = $events; |
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return $this; |
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} |
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/** |
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* Retrieve the event manager |
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* |
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* Lazy-loads an EventManager instance if none registered. |
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* |
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* @return EventManagerInterface |
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*/ |
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public function getEventManager() |
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{ |
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if (!$this->events instanceof EventManagerInterface) { |
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$this->setEventManager(new EventManager(new SharedEventManager())); |
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} |
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return $this->events; |
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} |
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} |
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ZF-Commons /
ZfcUser
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: