diff --git a/.travis.yml b/.travis.yml
index 37ba1989..0340c258 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,6 +16,7 @@ before_script:
               cd libevent-0.0.5 && phpize && ./configure && make && sudo make install;
               echo "extension=libevent.so" >> `php --ini | grep "Loaded Configuration" | sed -e "s|.*:\s*||"`;
             fi"
+  - echo "yes" | pecl install event
   - composer self-update
   - composer install --dev --prefer-source
 
diff --git a/src/React/EventLoop/ExtEventLoop.php b/src/React/EventLoop/ExtEventLoop.php
new file mode 100644
index 00000000..afa1d98a
--- /dev/null
+++ b/src/React/EventLoop/ExtEventLoop.php
@@ -0,0 +1,308 @@
+<?php
+
+namespace React\EventLoop;
+
+use Event;
+use EventBase;
+use React\EventLoop\Tick\NextTickQueue;
+use React\EventLoop\Timer\Timer;
+use React\EventLoop\Timer\TimerInterface;
+use SplObjectStorage;
+
+/**
+ * An ext-event based event-loop.
+ */
+class ExtEventLoop implements LoopInterface
+{
+    private $eventBase;
+    private $nextTickQueue;
+    private $timerCallback;
+    private $timerEvents;
+    private $streamCallback;
+    private $streamEvents = [];
+    private $streamFlags = [];
+    private $readListeners = [];
+    private $writeListeners = [];
+    private $running;
+
+    public function __construct()
+    {
+        $this->eventBase = new EventBase();
+        $this->nextTickQueue = new NextTickQueue($this);
+        $this->timerEvents = new SplObjectStorage();
+
+        $this->createTimerCallback();
+        $this->createStreamCallback();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function addReadStream($stream, callable $listener)
+    {
+        $key = (int) $stream;
+
+        if (!isset($this->readListeners[$key])) {
+            $this->readListeners[$key] = $listener;
+            $this->subscribeStreamEvent($stream, Event::READ);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function addWriteStream($stream, callable $listener)
+    {
+        $key = (int) $stream;
+
+        if (!isset($this->writeListeners[$key])) {
+            $this->writeListeners[$key] = $listener;
+            $this->subscribeStreamEvent($stream, Event::WRITE);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function removeReadStream($stream)
+    {
+        $key = (int) $stream;
+
+        if (isset($this->readListeners[$key])) {
+            unset($this->readListeners[$key]);
+            $this->unsubscribeStreamEvent($stream, Event::READ);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function removeWriteStream($stream)
+    {
+        $key = (int) $stream;
+
+        if (isset($this->writeListeners[$key])) {
+            unset($this->writeListeners[$key]);
+            $this->unsubscribeStreamEvent($stream, Event::WRITE);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function removeStream($stream)
+    {
+        $key = (int) $stream;
+
+        if (isset($this->streamEvents[$key])) {
+            $this->streamEvents[$key]->free();
+
+            unset(
+                $this->streamFlags[$key],
+                $this->streamEvents[$key],
+                $this->readListeners[$key],
+                $this->writeListeners[$key]
+            );
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function addTimer($interval, callable $callback)
+    {
+        $timer = new Timer($this, $interval, $callback, false);
+
+        $this->scheduleTimer($timer);
+
+        return $timer;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function addPeriodicTimer($interval, callable $callback)
+    {
+        $timer = new Timer($this, $interval, $callback, true);
+
+        $this->scheduleTimer($timer);
+
+        return $timer;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function cancelTimer(TimerInterface $timer)
+    {
+        if ($this->isTimerActive($timer)) {
+            $this->timerEvents[$timer]->free();
+            $this->timerEvents->detach($timer);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function isTimerActive(TimerInterface $timer)
+    {
+        return $this->timerEvents->contains($timer);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function nextTick(callable $listener)
+    {
+        $this->nextTickQueue->add($listener);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function tick()
+    {
+        $this->nextTickQueue->tick();
+
+        // @-suppression: https://github.com/reactphp/react/pull/234#discussion-diff-7759616R226
+        @$this->eventBase->loop(EventBase::LOOP_ONCE | EventBase::LOOP_NONBLOCK);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function run()
+    {
+        $this->running = true;
+
+        while ($this->running) {
+            $this->nextTickQueue->tick();
+
+            if (!$this->streamEvents && !$this->timerEvents->count()) {
+                break;
+            }
+
+            // @-suppression: https://github.com/reactphp/react/pull/234#discussion-diff-7759616R226
+            @$this->eventBase->loop(EventBase::LOOP_ONCE);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function stop()
+    {
+        $this->running = false;
+    }
+
+    /**
+     * Schedule a timer for execution.
+     *
+     * @param TimerInterface $timer
+     */
+    private function scheduleTimer(TimerInterface $timer)
+    {
+        $flags = Event::TIMEOUT;
+
+        if ($timer->isPeriodic()) {
+            $flags |= Event::PERSIST;
+        }
+
+        $event = new Event($this->eventBase, -1, $flags, $this->timerCallback, $timer);
+        $this->timerEvents[$timer] = $event;
+
+        $event->add($timer->getInterval());
+    }
+
+    /**
+     * Create a new ext-event Event object, or update the existing one.
+     *
+     * @param stream  $stream
+     * @param integer $flag   Event::READ or Event::WRITE
+     */
+    private function subscribeStreamEvent($stream, $flag)
+    {
+        $key = (int) $stream;
+
+        if (isset($this->streamEvents[$key])) {
+            $event = $this->streamEvents[$key];
+            $flags = ($this->streamFlags[$key] |= $flag);
+
+            $event->del();
+            $event->set($this->eventBase, $stream, Event::PERSIST | $flags, $this->streamCallback);
+        } else {
+            $event = new Event($this->eventBase, $stream, Event::PERSIST | $flag, $this->streamCallback);
+
+            $this->streamEvents[$key] = $event;
+            $this->streamFlags[$key] = $flag;
+        }
+
+        $event->add();
+    }
+
+    /**
+     * Update the ext-event Event object for this stream to stop listening to
+     * the given event type, or remove it entirely if it's no longer needed.
+     *
+     * @param stream  $stream
+     * @param integer $flag   Event::READ or Event::WRITE
+     */
+    private function unsubscribeStreamEvent($stream, $flag)
+    {
+        $key = (int) $stream;
+
+        $flags = $this->streamFlags[$key] &= ~$flag;
+
+        if (0 === $flags) {
+            $this->removeStream($stream);
+
+            return;
+        }
+
+        $event = $this->streamEvents[$key];
+
+        $event->del();
+        $event->set($this->eventBase, $stream, Event::PERSIST | $flags, $this->streamCallback);
+        $event->add();
+    }
+
+    /**
+     * Create a callback used as the target of timer events.
+     *
+     * A reference is kept to the callback for the lifetime of the loop
+     * to prevent "Cannot destroy active lambda function" fatal error from
+     * the event extension.
+     */
+    private function createTimerCallback()
+    {
+        $this->timerCallback = function ($_, $_, $timer) {
+            call_user_func($timer->getCallback(), $timer);
+
+            if (!$timer->isPeriodic() && $this->isTimerActive($timer)) {
+                $this->cancelTimer($timer);
+            }
+        };
+    }
+
+    /**
+     * Create a callback used as the target of stream events.
+     *
+     * A reference is kept to the callback for the lifetime of the loop
+     * to prevent "Cannot destroy active lambda function" fatal error from
+     * the event extension.
+     */
+    private function createStreamCallback()
+    {
+        $this->streamCallback = function ($stream, $flags) {
+            $key = (int) $stream;
+
+            if (Event::READ === (Event::READ & $flags) && isset($this->readListeners[$key])) {
+                call_user_func($this->readListeners[$key], $stream, $this);
+            }
+
+            if (Event::WRITE === (Event::WRITE & $flags) && isset($this->writeListeners[$key])) {
+                call_user_func($this->writeListeners[$key], $stream, $this);
+            }
+        };
+    }
+}
diff --git a/src/React/EventLoop/LibEventLoop.php b/src/React/EventLoop/LibEventLoop.php
index 599cb63b..88288003 100644
--- a/src/React/EventLoop/LibEventLoop.php
+++ b/src/React/EventLoop/LibEventLoop.php
@@ -2,6 +2,8 @@
 
 namespace React\EventLoop;
 
+use Event;
+use EventBase;
 use React\EventLoop\Tick\NextTickQueue;
 use React\EventLoop\Timer\Timer;
 use React\EventLoop\Timer\TimerInterface;
diff --git a/tests/React/Tests/EventLoop/ExtEventLoopTest.php b/tests/React/Tests/EventLoop/ExtEventLoopTest.php
new file mode 100644
index 00000000..a9570b40
--- /dev/null
+++ b/tests/React/Tests/EventLoop/ExtEventLoopTest.php
@@ -0,0 +1,59 @@
+<?php
+
+namespace React\Tests\EventLoop;
+
+use React\EventLoop\ExtEventLoop;
+
+class ExtEventLoopTest extends AbstractLoopTest
+{
+    public function createLoop()
+    {
+        if ('Linux' === PHP_OS && !extension_loaded('posix')) {
+            $this->markTestSkipped('libevent tests skipped on linux due to linux epoll issues.');
+        }
+
+        if (!extension_loaded('event')) {
+            $this->markTestSkipped('ext-event tests skipped because ext-event is not installed.');
+        }
+
+        return new ExtEventLoop();
+    }
+
+    public function createStream()
+    {
+        // Use a FIFO on linux to get around lack of support for disk-based file
+        // descriptors when using the EPOLL back-end.
+        if ('Linux' === PHP_OS) {
+            $this->fifoPath = tempnam(sys_get_temp_dir(), 'react-');
+
+            unlink($this->fifoPath);
+
+            posix_mkfifo($this->fifoPath, 0600);
+
+            $stream = fopen($this->fifoPath, 'r+');
+
+        // ext-event (as of 1.8.1) does not yet support in-memory temporary
+        // streams. Setting maxmemory:0 and performing a write forces PHP to
+        // back this temporary stream with a real file.
+        //
+        // This problem is mentioned at https://bugs.php.net/bug.php?id=64652&edit=3
+        // but remains unresolved (despite that issue being closed).
+        } else {
+            $stream = fopen('php://temp/maxmemory:0', 'r+');
+
+            fwrite($stream, 'x');
+            ftruncate($stream, 0);
+        }
+
+        return $stream;
+    }
+
+    public function writeToStream($stream, $content)
+    {
+        if ('Linux' !== PHP_OS) {
+            return parent::writeToStream($stream, $content);
+        }
+
+        fwrite($stream, $content);
+    }
+}
diff --git a/tests/React/Tests/EventLoop/Timer/ExtEventTimerTest.php b/tests/React/Tests/EventLoop/Timer/ExtEventTimerTest.php
new file mode 100644
index 00000000..a7a6d005
--- /dev/null
+++ b/tests/React/Tests/EventLoop/Timer/ExtEventTimerTest.php
@@ -0,0 +1,17 @@
+<?php
+
+namespace React\Tests\EventLoop\Timer;
+
+use React\EventLoop\ExtEventLoop;
+
+class ExtEventTimerTest extends AbstractTimerTest
+{
+    public function createLoop()
+    {
+        if (!extension_loaded('event')) {
+            $this->markTestSkipped('ext-event tests skipped because ext-event is not installed.');
+        }
+
+        return new ExtEventLoop();
+    }
+}

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