Timer::add() should return integer

Timer::add() returned TimerInterface with reactPHP. But we need integer.

Events/React.php

@@ -25,6 +25,16 @@ class React implements LoopInterface
  */
  protected $_loop = null;
 
+ /**
+ * @var array
+ */
+ protected $_timerIdMap = array();
+
+ /**
+ * @var int
+ */
+ protected $_timerIdIndex = 0;
+
  /**
  * React constructor.
  */
@@ -58,13 +68,17 @@ public function add($fd, $flag, $func, $args = array())
  case EventInterface::EV_SIGNAL:
  return $this->_loop->addSignal($fd, $func);
  case EventInterface::EV_TIMER:
- return $this->_loop->addPeriodicTimer($fd, function() use ($func, $args) {
+ $timer_obj = $this->_loop->addPeriodicTimer($fd, function() use ($func, $args) {
  call_user_func_array($func, $args);
  });
+ $this->_timerIdMap[++$this->_timerIdIndex] = $timer_obj;
+ return $this->_timerIdIndex;
  case EventInterface::EV_TIMER_ONCE:
- return $this->_loop->addTimer($fd, function() use ($func, $args) {
+ $timer_obj = $this->_loop->addTimer($fd, function() use ($func, $args) {
  call_user_func_array($func, $args);
  });
+ $this->_timerIdMap[++$this->_timerIdIndex] = $timer_obj;
+ return $this->_timerIdIndex;
  }
  return false;
  }
@@ -87,8 +101,11 @@ public function del($fd, $flag)
  return $this->_loop->removeSignal($fd);
  case EventInterface::EV_TIMER:
  case EventInterface::EV_TIMER_ONCE;
- if ($fd !== null){
- return $this->_loop->cancelTimer($fd);
+ if (isset($this->_timerIdMap[$fd])){
+ $timer_obj = $this->_timerIdMap[$fd];
+ unset($this->_timerIdMap[$fd]);
+ $this->_loop->cancelTimer($timer_obj);
+ return true;
  }
  }
  return false;