added new socket manager, errorhandling and testing is not finished yet

libs/React/EventLoop/Timer/TimerInterface.php

@@ -0,0 +1,62 @@
+<?php
+
+namespace React\EventLoop\Timer;
+
+use React\EventLoop\LoopInterface;
+
+interface TimerInterface
+{
+    /**
+     * Get the loop with which this timer is associated
+     *
+     * @return LoopInterface
+     */
+    public function getLoop();
+
+    /**
+     * Get the interval after which this timer will execute, in seconds
+     *
+     * @return float
+     */
+    public function getInterval();
+
+    /**
+     * Get the callback that will be executed when this timer elapses
+     *
+     * @return callable
+     */
+    public function getCallback();
+
+    /**
+     * Set arbitrary data associated with timer
+     *
+     * @param mixed $data
+     */
+    public function setData($data);
+
+    /**
+     * Get arbitrary data associated with timer
+     *
+     * @return mixed
+     */
+    public function getData();
+
+    /**
+     * Determine whether the time is periodic
+     *
+     * @return bool
+     */
+    public function isPeriodic();
+
+    /**
+     * Determine whether the time is active
+     *
+     * @return bool
+     */
+    public function isActive();
+
+    /**
+     * Cancel this timer
+     */
+    public function cancel();
+}