code quality improvements using Rector for PHP 8.2

Signed-off-by: Demin Yin <deminy@deminy.net>

composer.json

@@ -5,7 +5,7 @@
   "homepage": "https://github.com/deminy/swoole-by-examples",
   "license": "CC-BY-NC-ND-4.0",
   "require": {
-    "php": ">=8.0"
+    "php": ">=8.2"
   },
   "require-dev": {
     "swoole/ide-helper": "~5.0"

examples/csp/context.php

@@ -36,11 +36,8 @@
 
 run(function () {
     $class = new class() {
-        public string $name;
-
-        public function __construct(string $name = '')
+        public function __construct(public string $name = '')
         {
-            $this->name = $name;
         }
 
         public function __destruct()

examples/csp/scheduling/mixed.php

@@ -29,7 +29,7 @@ function () {
             Swoole\Coroutine::enableScheduler();
         });
 
-        go(function () {
+        go(function (): never {
             throw new Exception('Quitting.');
         });
     }

examples/csp/scheduling/non-preemptive.php

@@ -23,7 +23,7 @@ function () {
             }
         });
 
-        go(function () {
+        go(function (): never {
             throw new Exception('Quitting.');
         });
     }

examples/csp/scheduling/preemptive.php

@@ -25,7 +25,7 @@ function () {
             }
         });
 
-        go(function () {
+        go(function (): never {
             throw new Exception('Quitting.');
         });
     }

examples/servers/heartbeat.php

@@ -21,7 +21,7 @@
 // In this example, we start a TCP server first. When a client is connected, the server checks activities from the
 // client every second. If there is no data received from the client within 3 seconds, the server closes the connection.
 $serverProcess = new Process(
-    function () {
+    function (): never {
         $server = new Server('127.0.0.1', 9601);
         $server->set(
             [