Simplify and restructure examples

Author: clue

examples/01-periodic.php

@@ -0,0 +1,26 @@
+<?php
+
+use Clue\React\Stdio\Stdio;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$loop = React\EventLoop\Factory::create();
+
+$stdio = new Stdio($loop);
+
+$stdio->writeln('Will print periodic messages until you submit anything');
+
+// add some periodic noise
+$timer = $loop->addPeriodicTimer(0.5, function () use ($stdio) {
+    $stdio->writeln(date('Y-m-d H:i:s') . ' hello');
+});
+
+// react to commands the user entered
+$stdio->on('line', function ($line) use ($stdio, $timer) {
+    $stdio->writeln('you just said: ' . $line . ' (' . strlen($line) . ')');
+
+    $timer->cancel();
+    $stdio->end();
+});
+
+$loop->run();

examples/periodic.php renamed to examples/02-interactive.php

@@ -36,20 +36,15 @@
     return $offset > 1 ? array() : array('exit', 'quit', 'help', 'echo', 'print', 'printf');
 });
 
-$stdio->writeln('Will print periodic messages until you type "quit" or "exit"');
+$stdio->writeln('Welcome to this interactive demo');
 
-$stdio->on('line', function ($line) use ($stdio, $loop, &$timer) {
+// react to commands the user entered
+$stdio->on('line', function ($line) use ($stdio) {
     $stdio->writeln('you just said: ' . $line . ' (' . strlen($line) . ')');
 
     if (in_array(trim($line), array('quit', 'exit'))) {
-        $timer->cancel();
         $stdio->end();
     }
 });
 
-// add some periodic noise
-$timer = $loop->addPeriodicTimer(2.0, function () use ($stdio) {
-    $stdio->writeln('hello');
-});
-
 $loop->run();