Fix serializability of Logger class, fixes #1792

src/Monolog/Logger.php

@@ -722,4 +722,34 @@ protected function handleException(Throwable $e, array $record): void
 
  ($this->exceptionHandler)($e, $record);
  }
+
+ public function __serialize(): array
+ {
+ return [
+ 'name' => $this->name,
+ 'handlers' => $this->handlers,
+ 'processors' => $this->processors,
+ 'microsecondTimestamps' => $this->microsecondTimestamps,
+ 'timezone' => $this->timezone,
+ 'exceptionHandler' => $this->exceptionHandler,
+ 'logDepth' => $this->logDepth,
+ 'detectCycles' => $this->detectCycles,
+ ];
+ }
+
+ public function __unserialize(array $data): void
+ {
+ foreach (['name', 'handlers', 'processors', 'microsecondTimestamps', 'timezone', 'exceptionHandler', 'logDepth', 'detectCycles'] as $property) {
+ if (isset($data[$property])) {
+ $this->$property = $data;
+ }
+ }
+
+ if (\PHP_VERSION_ID >= 80100) {
+ // Local variable for phpstan, see https://github.com/phpstan/phpstan/issues/6732#issuecomment-1111118412
+ /** @var \WeakMap<\Fiber, int> $fiberLogDepth */
+ $fiberLogDepth = new \WeakMap();
+ $this->fiberLogDepth = $fiberLogDepth;
+ }
+ }
 }

tests/Monolog/LoggerTest.php

@@ -697,6 +697,12 @@ public function testCustomHandleException()
  $logger->info('test');
  }
 
+ public function testSerializable()
+ {
+ $logger = new Logger(__METHOD__);
+ self::assertInstanceOf(Logger::class, unserialize(serialize($logger)));
+ }
+
  public function testReset()
  {
  $logger = new Logger('app');
@@ -901,4 +907,4 @@ public function handleBatch(array $records): void
  public function close(): void
  {
  }
-}
+}