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   1 # hikke\Event
   2
   3 Prioritized event observers. [![Build Status](https://travis-ci.org/m6w6/hikke.svg)](https://travis-ci.org/m6w6/hikke)
   4
   5 Example:
   6
   7 ```php
   8 <?php
   9
  10 use hikke\Event;
  11
  12 class Observer implements \SplObserver {
  13         private $name;
  14         function __construct($name) {
  15                 $this->name = $name;
  16         }
  17         function update(\SplSubject $e) {
  18                 echo "Observer '{$this->name}' notified by '$e' ({$e->getPriority()})\n";
  19         }
  20         function proxiedMethodCall($arg) {
  21                 $this->name .= $arg;
  22         }
  23 }
  24
  25 $event = new Event("my_event");
  26 $event->attach(new Observer("o1"), 1);
  27 $event->attach(new Observer("o2"), 2);
  28 $event->notify();
  29
  30 ?>
  31 ```
  32
  33 Output:
  34
  35 ```
  36 Observer 'o1' notified by 'my_event' (0)
  37 Observer 'o2' notified by 'my_event' (0)
  38 ```
  39
  40 Another example:
  41
  42 ```php
  43 <?php
  44
  45 $proxy = new Event\Proxy;
  46 $proxy->ev1 = 0;
  47 $proxy->ev2 = 1;
  48 $proxy->attach(new Observer("o1"), null, 1);
  49 $proxy->attach(new Observer("o2"), null, 0);
  50 $proxy->attach(new Observer("o3"), "ev2");
  51 $proxy->ev3->attach(new Observer("o2"));
  52
  53 $proxy->proxiedMethodCall("-proxy");
  54 $proxy->notify();
  55 ?>
  56 ```
  57
  58 Output:
  59
  60 ```
  61 Observer 'o2-proxy' notified by 'default' (0.001)
  62 Observer 'o1-proxy' notified by 'default' (0.001)
  63 Observer 'o2-proxy' notified by 'ev1' (0.002)
  64 Observer 'o1-proxy' notified by 'ev1' (0.002)
  65 Observer 'o2-proxy' notified by 'ev3' (0.004)
  66 Observer 'o2-proxy' notified by 'ev2' (1.003)
  67 Observer 'o3-proxy' notified by 'ev2' (1.003)
  68 Observer 'o1-proxy' notified by 'ev2' (1.003)
  69 ```