Fix timers and improve HTTP examples

Author: kelunik

examples/http-client-async.php

@@ -13,7 +13,7 @@
 }
 
 // establish TCP/IP connection (non-blocking)
-// for illustraction purposes only, should use a proper socket abstraction instead!
+// for illustration purposes only, should use a proper socket abstraction instead!
 $stream = \stream_socket_client('tcp://' . $ip . ':80', $errno, $errstr, PHP_INT_MAX, STREAM_CLIENT_CONNECT | STREAM_CLIENT_ASYNC_CONNECT);
 if (!$stream) {
     exit(1);
@@ -22,7 +22,7 @@
 
 // print progress every 10ms
 echo 'Connecting';
-$timer = EventLoop::repeat(10, function () {
+$timer = EventLoop::repeat(0.01, function () {
     echo '.';
 });
 
@@ -48,7 +48,7 @@
             return;
         }
 
-        echo $chunk;
+        echo "Read " . \strlen($chunk) . " bytes..." . PHP_EOL;
     });
 });
 

examples/http-client-blocking.php

@@ -27,7 +27,7 @@
         return;
     }
 
-    echo $chunk;
+    echo "Read " . \strlen($chunk) . " bytes..." . PHP_EOL;
 });
 
 EventLoop::run();

examples/http-client-suspension.php

@@ -54,4 +54,8 @@ function fetch(string $url): string
     return $buffer;
 }
 
-echo fetch('http://www.google.com/');
+function extractHeader(string $httpResponse): string {
+    return explode("\r\n\r\n", $httpResponse, 2)[0];
+}
+
+echo extractHeader(fetch('http://www.google.com/'));

examples/http-server.php

@@ -12,6 +12,8 @@
 }
 \stream_set_blocking($server, false);
 
+echo "Visit http://localhost:8080/ in your browser." . PHP_EOL;
+
 // wait for incoming connections on server socket
 EventLoop::onReadable($server, function ($watcher, $server) {
     $conn = \stream_socket_accept($server);
@@ -27,9 +29,9 @@
     });
 });
 
-EventLoop::repeat(5000, function () {
+EventLoop::repeat(5, function () {
     $memory = \memory_get_usage() / 1024;
-    $formatted = \number_format($memory, 3).'K';
+    $formatted = \number_format($memory).' KiB';
     echo "Current memory usage: {$formatted}\n";
 });