Simplify ping-many example

examples/ping-many.php

@@ -5,26 +5,20 @@
 use Amp\Future;
 use Amp\Process\Process;
 use function Amp\async;
+use function Amp\ByteStream\getStdout;
 
 function show_process_output(Process $process): void
 {
-    $stream = $process->getStdout();
-
-    while (null !== $chunk = $stream->read()) {
-        echo $chunk;
-    }
+    Amp\ByteStream\pipe($process->getStdout(), getStdout());
 
     $code = $process->join();
     $pid = $process->getPid();
 
-    echo "Process {$pid} exited with {$code}\n";
+    getStdout()->write("Process {$pid} exited with {$code}\n");
 }
 
-$hosts = ['8.8.8.8', '8.8.4.4', 'google.com', 'stackoverflow.com', 'github.com'];
-
 $futures = [];
-
-foreach ($hosts as $host) {
+foreach (['8.8.8.8', '8.8.4.4', 'google.com', 'stackoverflow.com', 'github.com'] as $host) {
     $command = \DIRECTORY_SEPARATOR === "\\"
         ? "ping -n 5 {$host}"
         : "ping -c 5 {$host}";