symfony · nicolas-grekas · Aug 13, 2025
diff --git a/.github/expected-missing-return-types.diff b/.github/expected-missing-return-types.diff
diff --git a/src/Symfony/Bridge/Monolog/Handler/ElasticsearchLogstashHandler.php b/src/Symfony/Bridge/Monolog/Handler/ElasticsearchLogstashHandler.php
@@ -149,15 +149,12 @@ private function sendToElasticsearch(array $records): void
         $this->wait(false);
     }
 
-    public function __sleep(): array
+    public function __serialize(): array
     {
         throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
     }
 
-    /**
-     * @return void
-     */
-    public function __wakeup()
+    public function __unserialize(array $data): void
     {
         throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);
     }

diff --git a/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerTrait.php b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerTrait.php
@@ -93,12 +93,12 @@ public function __construct(array $mockedNamespaces = [])
         }
     }
 
-    public function __sleep()
+    public function __serialize(): array
     {
         throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
     }
 
-    public function __wakeup()
+    public function __unserialize(array $data): void
     {
         throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);
     }

diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/AppKernel.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/AppKernel.php
@@ -89,14 +89,16 @@ protected function build(ContainerBuilder $container): void
         $container->registerExtension(new TestDumpExtension());
     }
 
-    public function __sleep(): array
+    public function __serialize(): array
     {
-        return ['varDir', 'testCase', 'rootConfig', 'environment', 'debug'];
+        return [$this->varDir, $this->testCase, $this->rootConfig, $this->environment, $this->debug];
     }
 
-    public function __wakeup(): void
+    public function __unserialize(array $data): void
     {
-        foreach ($this as $k => $v) {
+        [$this->varDir, $this->testCase, $this->rootConfig, $this->environment, $this->debug] = $data;
+
+        foreach ($this as $v) {
             if (\is_object($v)) {
                 throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);
             }

diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Kernel/ConcreteMicroKernel.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Kernel/ConcreteMicroKernel.php
@@ -63,12 +63,12 @@ public function getLogDir(): string
         return $this->cacheDir;
     }
 
-    public function __sleep(): array
+    public function __serialize(): array
     {
         throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
     }
 
-    public function __wakeup(): void
+    public function __unserialize(array $data): void
     {
         throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);
     }

diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Kernel/flex-style/src/FlexStyleMicroKernel.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Kernel/flex-style/src/FlexStyleMicroKernel.php
@@ -64,12 +64,12 @@ public function getProjectDir(): string
         return \dirname((new \ReflectionObject($this))->getFileName(), 2);
     }
 
-    public function __sleep(): array
+    public function __serialize(): array
     {
         throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
     }
 
-    public function __wakeup(): void
+    public function __unserialize(array $data): void
     {
         throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);
     }

diff --git a/src/Symfony/Component/Cache/Adapter/TagAwareAdapter.php b/src/Symfony/Component/Cache/Adapter/TagAwareAdapter.php
@@ -294,15 +294,12 @@ public function reset()
         $this->tags instanceof ResettableInterface && $this->tags->reset();
     }
 
-    public function __sleep(): array
+    public function __serialize(): array
     {
         throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
     }
 
-    /**
-     * @return void
-     */
-    public function __wakeup()
+    public function __unserialize(array $data): void
     {
         throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);
     }

diff --git a/src/Symfony/Component/Cache/Tests/Adapter/AdapterTestCase.php b/src/Symfony/Component/Cache/Tests/Adapter/AdapterTestCase.php
@@ -373,7 +373,7 @@ public function testErrorsDontInvalidate()
 
 class NotUnserializable
 {
-    public function __wakeup()
+    public function __unserialize(array $data): void
     {
         throw new \Exception(__CLASS__);
     }

diff --git a/src/Symfony/Component/Cache/Tests/Psr16CacheTest.php b/src/Symfony/Component/Cache/Tests/Psr16CacheTest.php
@@ -176,7 +176,7 @@ protected function isPruned(CacheInterface $cache, string $name): bool
 
 class NotUnserializable
 {
-    public function __wakeup()
+    public function __unserialize(array $data): void
     {
         throw new \Exception(__CLASS__);
     }

diff --git a/src/Symfony/Component/Cache/Traits/AbstractAdapterTrait.php b/src/Symfony/Component/Cache/Traits/AbstractAdapterTrait.php
@@ -276,15 +276,12 @@ public function reset(): void
         $this->ids = [];
     }
 
-    public function __sleep(): array
+    public function __serialize(): array
     {
         throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
     }
 
-    /**
-     * @return void
-     */
-    public function __wakeup()
+    public function __unserialize(array $data): void
     {
         throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);
     }

diff --git a/src/Symfony/Component/Cache/Traits/FilesystemCommonTrait.php b/src/Symfony/Component/Cache/Traits/FilesystemCommonTrait.php
@@ -172,15 +172,12 @@ private function scanHashDir(string $directory): \Generator
         }
     }
 
-    public function __sleep(): array
+    public function __serialize(): array
     {
         throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
     }
 
-    /**
-     * @return void
-     */
-    public function __wakeup()
+    public function __unserialize(array $data): void
     {
         throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);
     }

diff --git a/src/Symfony/Component/Config/Resource/ClassExistenceResource.php b/src/Symfony/Component/Config/Resource/ClassExistenceResource.php
@@ -101,6 +101,39 @@
         return $this->exists[0] xor !$exists[0];
     }
 
+    /**
+     * @internal
+     */
+    public function __serialize(): array
+    {
+        $data = [];
+        foreach ($this->__sleep() as $key) {
+            try {
+                if (($r = new \ReflectionProperty($this, $key))->isInitialized($this)) {
+                    $data[$key] = $r->getValue($this);
+                }
+            } catch (\ReflectionException) {
+                $data[$key] = $this->$key;
+            }
+        }
+
+        return $data;
+    }
+
+    /**
+     * @internal
+     */
+    public function __unserialize(array $data): void
+    {
+        \Closure::bind(function ($data) {
+            foreach ($data as $key => $value) {
+                $this->{("\0" === $key[0] ?? '') ? substr($key, 1 + strrpos($key, "\0")) : $key} = $value;
+            }
+
+            $this->__wakeup();
+        }, $this, static::class)($data);
+    }
+
     /**
      * @internal
      */

diff --git a/src/Symfony/Component/Config/Resource/GlobResource.php b/src/Symfony/Component/Config/Resource/GlobResource.php
@@ -77,6 +77,39 @@
         return $this->hash === $hash;
     }
 
+    /**
+     * @internal
+     */
+    public function __serialize(): array
+    {
+        $data = [];
+        foreach ($this->__sleep() as $key) {
+            try {
+                if (($r = new \ReflectionProperty($this, $key))->isInitialized($this)) {
+                    $data[$key] = $r->getValue($this);
+                }
+            } catch (\ReflectionException) {
+                $data[$key] = $this->$key;
+            }
+        }
+
+        return $data;
+    }
+
+    /**
+     * @internal
+     */
+    public function __unserialize(array $data): void
+    {
+        \Closure::bind(function ($data) {
+            foreach ($data as $key => $value) {
+                $this->{("\0" === $key[0] ?? '') ? substr($key, 1 + strrpos($key, "\0")) : $key} = $value;
+            }
+
+            $this->__wakeup();
+        }, $this, static::class)($data);
+    }
+
     /**
      * @internal
      */

diff --git a/src/Symfony/Component/Config/Resource/ReflectionClassResource.php b/src/Symfony/Component/Config/Resource/ReflectionClassResource.php
@@ -60,6 +60,25 @@ public function __toString(): string
         return 'reflection.'.$this->className;
     }
 
+    /**
+     * @internal
+     */
+    public function __serialize(): array
+    {
+        $data = [];
+        foreach ($this->__sleep() as $key) {
+            try {
+                if (($r = new \ReflectionProperty($this, $key))->isInitialized($this)) {
+                    $data[$key] = $r->getValue($this);
+                }
+            } catch (\ReflectionException) {
+                $data[$key] = $this->$key;
+            }
+        }
+
+        return $data;
+    }
+
     /**
      * @internal
      */

diff --git a/src/Symfony/Component/DependencyInjection/Loader/Configurator/AbstractConfigurator.php b/src/Symfony/Component/DependencyInjection/Loader/Configurator/AbstractConfigurator.php
@@ -46,15 +46,12 @@ public function __call(string $method, array $args)
         throw new \BadMethodCallException(\sprintf('Call to undefined method "%s::%s()".', static::class, $method));
     }
 
-    public function __sleep(): array
+    public function __serialize(): array
     {
         throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
     }
 
-    /**
-     * @return void
-     */
-    public function __wakeup()
+    public function __unserialize(array $data): void
     {
         throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);
     }

@@ -35,15 +35,12 @@ public function cleanLogs(): array
         return $logs;
     }
 
-    public function __sleep(): array
+    public function __serialize(): array
     {
         throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
     }
 
-    /**
-     * @return void
-     */
-    public function __wakeup()
+    public function __unserialize(array $data): void
     {
         throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);
     }

@@ -70,11 +70,11 @@ public function format(string $file, int $line): string|bool
     /**
      * @internal
      */
-    public function __sleep(): array
+    public function __serialize(): array
     {
         $this->fileLinkFormat = $this->getFileLinkFormat();
 
-        return ['fileLinkFormat'];
+        return ['fileLinkFormat' => $this->fileLinkFormat];
     }
 
     /**

@@ -200,6 +200,25 @@ public function getData(): array|Data
         return $this->data;
     }
 
+    /**
+     * @internal
+     */
+    public function __serialize(): array
+    {
+        $data = [];
+        foreach ($this->__sleep() as $key) {
+            try {
+                if (($r = new \ReflectionProperty($this, $key))->isInitialized($this)) {
+                    $data[$key] = $r->getValue($this);
+                }
+            } catch (\ReflectionException) {
+                $data[$key] = $this->$key;
+            }
+        }
+
+        return $data;
+    }
+
     /**
      * @internal
      */

@@ -57,15 +57,12 @@ public function __construct(array &$elements, array &$orderedKeys, array &$manag
         $this->managedCursors[$this->cursorId] = &$this->cursor;
     }
 
-    public function __sleep(): array
+    public function __serialize(): array
     {
         throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
     }
 
-    /**
-     * @return void
-     */
-    public function __wakeup()
+    public function __unserialize(array $data): void
     {
         throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);
     }

diff --git a/src/Symfony/Component/HttpClient/Chunk/ErrorChunk.php b/src/Symfony/Component/HttpClient/Chunk/ErrorChunk.php
@@ -93,15 +93,12 @@ public function didThrow(?bool $didThrow = null): bool
         return $this->didThrow;
     }
 
-    public function __sleep(): array
+    public function __serialize(): array
     {
         throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
     }
 
-    /**
-     * @return void
-     */
-    public function __wakeup()
+    public function __unserialize(array $data): void
     {
         throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);
     }

diff --git a/src/Symfony/Component/HttpClient/HttplugClient.php b/src/Symfony/Component/HttpClient/HttplugClient.php
@@ -250,12 +250,12 @@ public function createUri($uri = ''): UriInterface
         throw new \LogicException(\sprintf('You cannot use "%s()" as no PSR-17 factories have been found. Try running "composer require php-http/discovery psr/http-factory-implementation:*".', __METHOD__));
     }
 
-    public function __sleep(): array
+    public function __serialize(): array
     {
         throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
     }
 
-    public function __wakeup(): void
+    public function __unserialize(array $data): void
     {
         throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);
     }