From d4ab0bcd71f82b6c07099c2366f55195a0dfef85 Mon Sep 17 00:00:00 2001
From: Bob Weinand <bobwei9@hotmail.com>
Date: Wed, 12 Mar 2025 16:24:33 +0100
Subject: [PATCH 01/10] Fix #105: Ensure the callback fiber is always alive as
 long as the event loop lives

---
 phpunit.xml.dist                          |  1 +
 src/EventLoop/Internal/AbstractDriver.php | 11 +++++--
 test/event_loop_destruction_order.phpt    | 38 +++++++++++++++++++++++
 3 files changed, 47 insertions(+), 3 deletions(-)
 create mode 100644 test/event_loop_destruction_order.phpt

diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 6345e57..0a6176e 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -13,6 +13,7 @@
     <testsuites>
         <testsuite name="Main">
             <directory>test</directory>
+            <directory suffix=".phpt">test</directory>
         </testsuite>
     </testsuites>
 </phpunit>
diff --git a/src/EventLoop/Internal/AbstractDriver.php b/src/EventLoop/Internal/AbstractDriver.php
index 94de316..998f3b5 100644
--- a/src/EventLoop/Internal/AbstractDriver.php
+++ b/src/EventLoop/Internal/AbstractDriver.php
@@ -498,9 +498,14 @@ private function invokeCallbacks(): void
     {
         while (!$this->microtaskQueue->isEmpty() || !$this->callbackQueue->isEmpty()) {
             /** @noinspection PhpUnhandledExceptionInspection */
-            $yielded = $this->callbackFiber->isStarted()
-                ? $this->callbackFiber->resume()
-                : $this->callbackFiber->start();
+            if ($this->callbackFiber->isSuspended()) {
+                $yielded = $this->callbackFiber->resume();
+            } else {
+                if ($this->callbackFiber->isTerminated()) {
+                    $this->createCallbackFiber();
+                }
+                $yielded = $this->callbackFiber->start();
+            }
 
             if ($yielded !== $this->internalSuspensionMarker) {
                 $this->createCallbackFiber();
diff --git a/test/event_loop_destruction_order.phpt b/test/event_loop_destruction_order.phpt
new file mode 100644
index 0000000..0d13794
--- /dev/null
+++ b/test/event_loop_destruction_order.phpt
@@ -0,0 +1,38 @@
+--TEST--
+Issue #105: Ensure the callback fiber is always alive as long as the event loop lives
+--FILE--
+<?php
+
+use Revolt\EventLoop;
+
+require 'vendor/autoload.php';
+
+final class a {
+    private static self $a;
+    public static function getInstance(): self {
+        return self::$a ??= new self;
+    }
+
+    public function __destruct()
+    {
+        echo "Destroying ", self::class, "\n";
+        $suspension = EventLoop::getSuspension();
+        EventLoop::delay(1.0, $suspension->resume(...));
+        $suspension->suspend();
+        echo "Finished " . self::class, "\n";
+    }
+}
+
+EventLoop::defer(function () {
+    echo "start\n";
+});
+
+a::getInstance();
+
+EventLoop::run();
+
+?>
+--EXPECT--
+start
+Destroying a
+Finished a

From 4b4142ecb734e762808d76ae860a2eaad9cce645 Mon Sep 17 00:00:00 2001
From: Daniil Gentili <daniil@daniil.it>
Date: Fri, 15 May 2026 10:12:38 +0200
Subject: [PATCH 02/10] Fix

---
 test/Driver/TimerQueueTest.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/test/Driver/TimerQueueTest.php b/test/Driver/TimerQueueTest.php
index c85666d..c2a69cc 100644
--- a/test/Driver/TimerQueueTest.php
+++ b/test/Driver/TimerQueueTest.php
@@ -47,7 +47,9 @@ public function testHeapOrder(): void
         $id = 'a';
         $callbacks = [];
         foreach ($values as $value) {
-            $callback = new TimerCallback($id++, $value, static function () {
+            $myId = $id;
+            $id = str_increment($id);
+            $callback = new TimerCallback($myId, $value, static function () {
             }, $value);
             $callbacks[] = $callback;
         }

From 79bdc3b493a8901a5cf626f7fc3bfb56785cc63c Mon Sep 17 00:00:00 2001
From: Daniil Gentili <daniil@daniil.it>
Date: Fri, 15 May 2026 10:32:37 +0200
Subject: [PATCH 03/10] Fix

---
 src/EventLoop/Driver/EvDriver.php    | 1 +
 src/EventLoop/Driver/EventDriver.php | 3 ++-
 src/EventLoop/Driver/UvDriver.php    | 8 ++++++++
 3 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/EventLoop/Driver/EvDriver.php b/src/EventLoop/Driver/EvDriver.php
index e0a33a3..3de66db 100644
--- a/src/EventLoop/Driver/EvDriver.php
+++ b/src/EventLoop/Driver/EvDriver.php
@@ -91,6 +91,7 @@ public function __destruct()
         // We need to clear all references to events manually, see
         // https://bitbucket.org/osmanov/pecl-ev/issues/31/segfault-in-ev_timer_stop
         $this->events = [];
+        $this->handle = new \EvLoop();
     }
 
     /**
diff --git a/src/EventLoop/Driver/EventDriver.php b/src/EventLoop/Driver/EventDriver.php
index 869c3a9..416de6d 100644
--- a/src/EventLoop/Driver/EventDriver.php
+++ b/src/EventLoop/Driver/EventDriver.php
@@ -91,7 +91,8 @@ public function __destruct()
         /** @psalm-suppress RedundantPropertyInitializationCheck */
         if (isset($this->handle)) {
             $this->handle->free();
-            unset($this->handle);
+            /** @psalm-suppress TooFewArguments https://github.com/JetBrains/phpstorm-stubs/pull/763 */
+            $this->handle = new \EventBase();
         }
     }
 
diff --git a/src/EventLoop/Driver/UvDriver.php b/src/EventLoop/Driver/UvDriver.php
index f46d909..5a08e0c 100644
--- a/src/EventLoop/Driver/UvDriver.php
+++ b/src/EventLoop/Driver/UvDriver.php
@@ -110,6 +110,14 @@ public function cancel(string $callbackId): void
         unset($this->events[$callbackId]);
     }
 
+    public function __destruct()
+    {
+        $this->events = [];
+        $this->uvCallbacks = [];
+        $this->streams = [];
+        $this->handle = \uv_loop_new();
+    }
+
     /**
      * @return \UVLoop|resource
      */

From 62b6483fe79f63056cad7f28eb1324f0320f646f Mon Sep 17 00:00:00 2001
From: Daniil Gentili <daniil@daniil.it>
Date: Fri, 15 May 2026 10:33:21 +0200
Subject: [PATCH 04/10] Add more tests

---
 test/event_loop_destruction_order_ev.phpt     | 49 +++++++++++++++++++
 test/event_loop_destruction_order_event.phpt  | 49 +++++++++++++++++++
 ..._loop_destruction_order_stream_select.phpt | 41 ++++++++++++++++
 test/event_loop_destruction_order_uv.phpt     | 49 +++++++++++++++++++
 4 files changed, 188 insertions(+)
 create mode 100644 test/event_loop_destruction_order_ev.phpt
 create mode 100644 test/event_loop_destruction_order_event.phpt
 create mode 100644 test/event_loop_destruction_order_stream_select.phpt
 create mode 100644 test/event_loop_destruction_order_uv.phpt

diff --git a/test/event_loop_destruction_order_ev.phpt b/test/event_loop_destruction_order_ev.phpt
new file mode 100644
index 0000000..3a1f0bc
--- /dev/null
+++ b/test/event_loop_destruction_order_ev.phpt
@@ -0,0 +1,49 @@
+--TEST--
+Issue #105: Ensure the callback fiber is always alive as long as the event loop lives (ev driver)
+--SKIPIF--
+<?php
+
+if (!\extension_loaded('ev')) {
+    echo 'skip ev extension required';
+}
+
+?>
+--FILE--
+<?php
+
+use Revolt\EventLoop;
+use Revolt\EventLoop\Driver\EvDriver;
+
+require 'vendor/autoload.php';
+
+EventLoop::setDriver(new EvDriver());
+
+final class a {
+    private static self $a;
+    public static function getInstance(): self {
+        return self::$a ??= new self;
+    }
+
+    public function __destruct()
+    {
+        echo "Destroying ", self::class, "\n";
+        $suspension = EventLoop::getSuspension();
+        EventLoop::delay(1.0, $suspension->resume(...));
+        $suspension->suspend();
+        echo "Finished " . self::class, "\n";
+    }
+}
+
+EventLoop::defer(function () {
+    echo "start\n";
+});
+
+a::getInstance();
+
+EventLoop::run();
+
+?>
+--EXPECT--
+start
+Destroying a
+Finished a
diff --git a/test/event_loop_destruction_order_event.phpt b/test/event_loop_destruction_order_event.phpt
new file mode 100644
index 0000000..c193da0
--- /dev/null
+++ b/test/event_loop_destruction_order_event.phpt
@@ -0,0 +1,49 @@
+--TEST--
+Issue #105: Ensure the callback fiber is always alive as long as the event loop lives (event driver)
+--SKIPIF--
+<?php
+
+if (!\extension_loaded('event')) {
+    echo 'skip event extension required';
+}
+
+?>
+--FILE--
+<?php
+
+use Revolt\EventLoop;
+use Revolt\EventLoop\Driver\EventDriver;
+
+require 'vendor/autoload.php';
+
+EventLoop::setDriver(new EventDriver());
+
+final class a {
+    private static self $a;
+    public static function getInstance(): self {
+        return self::$a ??= new self;
+    }
+
+    public function __destruct()
+    {
+        echo "Destroying ", self::class, "\n";
+        $suspension = EventLoop::getSuspension();
+        EventLoop::delay(1.0, $suspension->resume(...));
+        $suspension->suspend();
+        echo "Finished " . self::class, "\n";
+    }
+}
+
+EventLoop::defer(function () {
+    echo "start\n";
+});
+
+a::getInstance();
+
+EventLoop::run();
+
+?>
+--EXPECT--
+start
+Destroying a
+Finished a
diff --git a/test/event_loop_destruction_order_stream_select.phpt b/test/event_loop_destruction_order_stream_select.phpt
new file mode 100644
index 0000000..fa128d0
--- /dev/null
+++ b/test/event_loop_destruction_order_stream_select.phpt
@@ -0,0 +1,41 @@
+--TEST--
+Issue #105: Ensure the callback fiber is always alive as long as the event loop lives (stream_select driver)
+--FILE--
+<?php
+
+use Revolt\EventLoop;
+use Revolt\EventLoop\Driver\StreamSelectDriver;
+
+require 'vendor/autoload.php';
+
+EventLoop::setDriver(new StreamSelectDriver());
+
+final class a {
+    private static self $a;
+    public static function getInstance(): self {
+        return self::$a ??= new self;
+    }
+
+    public function __destruct()
+    {
+        echo "Destroying ", self::class, "\n";
+        $suspension = EventLoop::getSuspension();
+        EventLoop::delay(1.0, $suspension->resume(...));
+        $suspension->suspend();
+        echo "Finished " . self::class, "\n";
+    }
+}
+
+EventLoop::defer(function () {
+    echo "start\n";
+});
+
+a::getInstance();
+
+EventLoop::run();
+
+?>
+--EXPECT--
+start
+Destroying a
+Finished a
diff --git a/test/event_loop_destruction_order_uv.phpt b/test/event_loop_destruction_order_uv.phpt
new file mode 100644
index 0000000..f154486
--- /dev/null
+++ b/test/event_loop_destruction_order_uv.phpt
@@ -0,0 +1,49 @@
+--TEST--
+Issue #105: Ensure the callback fiber is always alive as long as the event loop lives (uv driver)
+--SKIPIF--
+<?php
+
+if (!\extension_loaded('uv')) {
+    echo 'skip uv extension required';
+}
+
+?>
+--FILE--
+<?php
+
+use Revolt\EventLoop;
+use Revolt\EventLoop\Driver\UvDriver;
+
+require 'vendor/autoload.php';
+
+EventLoop::setDriver(new UvDriver());
+
+final class a {
+    private static self $a;
+    public static function getInstance(): self {
+        return self::$a ??= new self;
+    }
+
+    public function __destruct()
+    {
+        echo "Destroying ", self::class, "\n";
+        $suspension = EventLoop::getSuspension();
+        EventLoop::delay(1.0, $suspension->resume(...));
+        $suspension->suspend();
+        echo "Finished " . self::class, "\n";
+    }
+}
+
+EventLoop::defer(function () {
+    echo "start\n";
+});
+
+a::getInstance();
+
+EventLoop::run();
+
+?>
+--EXPECT--
+start
+Destroying a
+Finished a

From 0252709cd412f8f25d2f933caa903f995c776fe3 Mon Sep 17 00:00:00 2001
From: Daniil Gentili <daniil@daniil.it>
Date: Fri, 15 May 2026 10:33:43 +0200
Subject: [PATCH 05/10] Cleanup

---
 test/event_loop_destruction_order.phpt | 38 --------------------------
 1 file changed, 38 deletions(-)
 delete mode 100644 test/event_loop_destruction_order.phpt

diff --git a/test/event_loop_destruction_order.phpt b/test/event_loop_destruction_order.phpt
deleted file mode 100644
index 0d13794..0000000
--- a/test/event_loop_destruction_order.phpt
+++ /dev/null
@@ -1,38 +0,0 @@
---TEST--
-Issue #105: Ensure the callback fiber is always alive as long as the event loop lives
---FILE--
-<?php
-
-use Revolt\EventLoop;
-
-require 'vendor/autoload.php';
-
-final class a {
-    private static self $a;
-    public static function getInstance(): self {
-        return self::$a ??= new self;
-    }
-
-    public function __destruct()
-    {
-        echo "Destroying ", self::class, "\n";
-        $suspension = EventLoop::getSuspension();
-        EventLoop::delay(1.0, $suspension->resume(...));
-        $suspension->suspend();
-        echo "Finished " . self::class, "\n";
-    }
-}
-
-EventLoop::defer(function () {
-    echo "start\n";
-});
-
-a::getInstance();
-
-EventLoop::run();
-
-?>
---EXPECT--
-start
-Destroying a
-Finished a

From c3119b300e0ceea4a3e568a277abd141f3266c0f Mon Sep 17 00:00:00 2001
From: Daniil Gentili <daniil@daniil.it>
Date: Fri, 15 May 2026 10:43:17 +0200
Subject: [PATCH 06/10] Fixup

---
 examples/benchmark-ticks.php                         | 3 ++-
 examples/benchmark-timers.php                        | 3 ++-
 test/Driver/TimerQueueTest.php                       | 2 +-
 test/event_loop_destruction_order_ev.phpt            | 4 ++++
 test/event_loop_destruction_order_event.phpt         | 4 ++++
 test/event_loop_destruction_order_stream_select.phpt | 8 ++++++++
 test/event_loop_destruction_order_uv.phpt            | 4 ++++
 7 files changed, 25 insertions(+), 3 deletions(-)

diff --git a/examples/benchmark-ticks.php b/examples/benchmark-ticks.php
index 4ac1642..15b3ff3 100644
--- a/examples/benchmark-ticks.php
+++ b/examples/benchmark-ticks.php
@@ -9,7 +9,8 @@
 $n = isset($argv[1]) ? (int) $argv[1] : 1000 * 100;
 
 for ($i = 0; $i < $n; ++$i) {
-    EventLoop::defer(function () { });
+    EventLoop::defer(function () {
+    });
 }
 
 EventLoop::run();
diff --git a/examples/benchmark-timers.php b/examples/benchmark-timers.php
index 112d2f1..27c0dd4 100644
--- a/examples/benchmark-timers.php
+++ b/examples/benchmark-timers.php
@@ -9,7 +9,8 @@
 $n = isset($argv[1]) ? (int) $argv[1] : 1000 * 100;
 
 for ($i = 0; $i < $n; ++$i) {
-    EventLoop::delay(0, function () { });
+    EventLoop::delay(0, function () {
+    });
 }
 
 EventLoop::run();
diff --git a/test/Driver/TimerQueueTest.php b/test/Driver/TimerQueueTest.php
index c2a69cc..c64bd37 100644
--- a/test/Driver/TimerQueueTest.php
+++ b/test/Driver/TimerQueueTest.php
@@ -48,7 +48,7 @@ public function testHeapOrder(): void
         $callbacks = [];
         foreach ($values as $value) {
             $myId = $id;
-            $id = str_increment($id);
+            $id = \str_increment($id);
             $callback = new TimerCallback($myId, $value, static function () {
             }, $value);
             $callbacks[] = $callback;
diff --git a/test/event_loop_destruction_order_ev.phpt b/test/event_loop_destruction_order_ev.phpt
index 3a1f0bc..0ba34d3 100644
--- a/test/event_loop_destruction_order_ev.phpt
+++ b/test/event_loop_destruction_order_ev.phpt
@@ -3,6 +3,10 @@ Issue #105: Ensure the callback fiber is always alive as long as the event loop
 --SKIPIF--
 <?php
 
+if (PHP_VERSION_ID < 80400) {
+    echo 'skip PHP 8.4+ required';
+}
+
 if (!\extension_loaded('ev')) {
     echo 'skip ev extension required';
 }
diff --git a/test/event_loop_destruction_order_event.phpt b/test/event_loop_destruction_order_event.phpt
index c193da0..3f27168 100644
--- a/test/event_loop_destruction_order_event.phpt
+++ b/test/event_loop_destruction_order_event.phpt
@@ -3,6 +3,10 @@ Issue #105: Ensure the callback fiber is always alive as long as the event loop
 --SKIPIF--
 <?php
 
+if (PHP_VERSION_ID < 80400) {
+    echo 'skip PHP 8.4+ required';
+}
+
 if (!\extension_loaded('event')) {
     echo 'skip event extension required';
 }
diff --git a/test/event_loop_destruction_order_stream_select.phpt b/test/event_loop_destruction_order_stream_select.phpt
index fa128d0..a9c19ee 100644
--- a/test/event_loop_destruction_order_stream_select.phpt
+++ b/test/event_loop_destruction_order_stream_select.phpt
@@ -1,5 +1,13 @@
 --TEST--
 Issue #105: Ensure the callback fiber is always alive as long as the event loop lives (stream_select driver)
+--SKIPIF--
+<?php
+
+if (PHP_VERSION_ID < 80400) {
+    echo 'skip PHP 8.4+ required';
+}
+
+?>
 --FILE--
 <?php
 
diff --git a/test/event_loop_destruction_order_uv.phpt b/test/event_loop_destruction_order_uv.phpt
index f154486..42987c4 100644
--- a/test/event_loop_destruction_order_uv.phpt
+++ b/test/event_loop_destruction_order_uv.phpt
@@ -3,6 +3,10 @@ Issue #105: Ensure the callback fiber is always alive as long as the event loop
 --SKIPIF--
 <?php
 
+if (PHP_VERSION_ID < 80400) {
+    echo 'skip PHP 8.4+ required';
+}
+
 if (!\extension_loaded('uv')) {
     echo 'skip uv extension required';
 }

From 93459b6871a84cf6458eaeb5e9ca4dccf086f4a2 Mon Sep 17 00:00:00 2001
From: Daniil Gentili <daniil@daniil.it>
Date: Fri, 15 May 2026 10:46:25 +0200
Subject: [PATCH 07/10] Fix

---
 test/Driver/TimerQueueTest.php | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/test/Driver/TimerQueueTest.php b/test/Driver/TimerQueueTest.php
index c64bd37..507f2a1 100644
--- a/test/Driver/TimerQueueTest.php
+++ b/test/Driver/TimerQueueTest.php
@@ -48,7 +48,14 @@ public function testHeapOrder(): void
         $callbacks = [];
         foreach ($values as $value) {
             $myId = $id;
-            $id = \str_increment($id);
+
+            if (\PHP_VERSION_ID >= 80300) {
+                /** @psalm-suppress UndefinedFunction */
+                $id = \str_increment($id);
+            } else {
+                $id++;
+            }
+
             $callback = new TimerCallback($myId, $value, static function () {
             }, $value);
             $callbacks[] = $callback;

From a233f05691de64a61333d4519929945972d9463b Mon Sep 17 00:00:00 2001
From: Aaron Piotrowski <aaron@trowski.com>
Date: Sat, 16 May 2026 12:12:20 -0500
Subject: [PATCH 08/10] Add comments to clarify handle re-initialization

---
 src/EventLoop/Driver/EvDriver.php    | 3 +++
 src/EventLoop/Driver/EventDriver.php | 3 +++
 src/EventLoop/Driver/UvDriver.php    | 3 +++
 3 files changed, 9 insertions(+)

diff --git a/src/EventLoop/Driver/EvDriver.php b/src/EventLoop/Driver/EvDriver.php
index 3de66db..8a1a008 100644
--- a/src/EventLoop/Driver/EvDriver.php
+++ b/src/EventLoop/Driver/EvDriver.php
@@ -91,6 +91,9 @@ public function __destruct()
         // We need to clear all references to events manually, see
         // https://bitbucket.org/osmanov/pecl-ev/issues/31/segfault-in-ev_timer_stop
         $this->events = [];
+
+        // Reinitialize the loop handle due to indeterminate destruct order.
+        // See https://github.com/revoltphp/event-loop/issues/105
         $this->handle = new \EvLoop();
     }
 
diff --git a/src/EventLoop/Driver/EventDriver.php b/src/EventLoop/Driver/EventDriver.php
index 416de6d..aa1ff5e 100644
--- a/src/EventLoop/Driver/EventDriver.php
+++ b/src/EventLoop/Driver/EventDriver.php
@@ -91,6 +91,9 @@ public function __destruct()
         /** @psalm-suppress RedundantPropertyInitializationCheck */
         if (isset($this->handle)) {
             $this->handle->free();
+
+            // Reinitialize the loop handle due to indeterminate destruct order.
+            // See https://github.com/revoltphp/event-loop/issues/105
             /** @psalm-suppress TooFewArguments https://github.com/JetBrains/phpstorm-stubs/pull/763 */
             $this->handle = new \EventBase();
         }
diff --git a/src/EventLoop/Driver/UvDriver.php b/src/EventLoop/Driver/UvDriver.php
index 5a08e0c..c7dbbbe 100644
--- a/src/EventLoop/Driver/UvDriver.php
+++ b/src/EventLoop/Driver/UvDriver.php
@@ -115,6 +115,9 @@ public function __destruct()
         $this->events = [];
         $this->uvCallbacks = [];
         $this->streams = [];
+
+        // Reinitialize the loop handle due to indeterminate destruct order.
+        // See https://github.com/revoltphp/event-loop/issues/105
         $this->handle = \uv_loop_new();
     }
 

From df203127666a41ff54cf960d386be6b4bf01db06 Mon Sep 17 00:00:00 2001
From: Aaron Piotrowski <aaron@trowski.com>
Date: Sat, 16 May 2026 12:14:30 -0500
Subject: [PATCH 09/10] No need for temp

---
 test/Driver/TimerQueueTest.php | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/test/Driver/TimerQueueTest.php b/test/Driver/TimerQueueTest.php
index 507f2a1..a6ccb1f 100644
--- a/test/Driver/TimerQueueTest.php
+++ b/test/Driver/TimerQueueTest.php
@@ -47,7 +47,8 @@ public function testHeapOrder(): void
         $id = 'a';
         $callbacks = [];
         foreach ($values as $value) {
-            $myId = $id;
+            $callback = new TimerCallback($id, $value, static function () {}, $value);
+            $callbacks[] = $callback;
 
             if (\PHP_VERSION_ID >= 80300) {
                 /** @psalm-suppress UndefinedFunction */
@@ -55,10 +56,6 @@ public function testHeapOrder(): void
             } else {
                 $id++;
             }
-
-            $callback = new TimerCallback($myId, $value, static function () {
-            }, $value);
-            $callbacks[] = $callback;
         }
 
         $toRemove = $callbacks[$indexToRemove];

From e93e9e6d71b28513e30797d3c2fbbfcec76d22da Mon Sep 17 00:00:00 2001
From: Aaron Piotrowski <aaron@trowski.com>
Date: Sat, 16 May 2026 12:18:51 -0500
Subject: [PATCH 10/10] Ugh, fine style fixer, I'll comply

---
 test/Driver/TimerQueueTest.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/test/Driver/TimerQueueTest.php b/test/Driver/TimerQueueTest.php
index a6ccb1f..6c0fc80 100644
--- a/test/Driver/TimerQueueTest.php
+++ b/test/Driver/TimerQueueTest.php
@@ -47,7 +47,8 @@ public function testHeapOrder(): void
         $id = 'a';
         $callbacks = [];
         foreach ($values as $value) {
-            $callback = new TimerCallback($id, $value, static function () {}, $value);
+            $callback = new TimerCallback($id, $value, static function () {
+            }, $value);
             $callbacks[] = $callback;
 
             if (\PHP_VERSION_ID >= 80300) {