[4.x] Rollback to is_a() to ignore exceptions instead of in_array()

src/Client.php

@@ -331,13 +331,15 @@ private function applyIgnoreOptions(Event $event): ?Event
             }
 
             foreach ($exceptions as $exception) {
-                if (\in_array($exception->getType(), $this->options->getIgnoreExceptions(), true)) {
-                    $this->logger->info(
-                        'The event will be discarded because it matches an entry in "ignore_exceptions".',
-                        ['event' => $event]
-                    );
-
-                    return null;
+                foreach ($this->options->getIgnoreExceptions() as $ignoredException) {
+                    if (is_a($exception->getType(), $ignoredException, true)) {
+                        $this->logger->info(
+                            'The event will be discarded because it matches an entry in "ignore_exceptions".',
+                            ['event' => $event]
+                        );
+
+                        return null;
+                    }
                 }
             }
         }

tests/ClientTest.php

@@ -22,6 +22,7 @@
 use Sentry\Severity;
 use Sentry\Stacktrace;
 use Sentry\State\Scope;
+use Sentry\Tests\Fixtures\code\CustomException;
 use Sentry\Transport\Result;
 use Sentry\Transport\ResultStatus;
 use Sentry\Transport\TransportInterface;
@@ -594,6 +595,29 @@ public function testProcessEventDiscardsEventWhenIgnoreExceptionsMatches(): void
         $client->captureException($exception);
     }
 
+    public function testProcessEventDiscardsEventWhenParentHierarchyOfIgnoreExceptionsMatches(): void
+    {
+        $exception = new CustomException('Some foo error');
+
+        /** @var LoggerInterface&MockObject $logger */
+        $logger = $this->createMock(LoggerInterface::class);
+        $logger->expects($this->once())
+            ->method('info')
+            ->with('The event will be discarded because it matches an entry in "ignore_exceptions".', $this->callback(static function (array $context): bool {
+                return isset($context['event']) && $context['event'] instanceof Event;
+            }));
+
+        $options = [
+            'ignore_exceptions' => [\RuntimeException::class],
+        ];
+
+        $client = ClientBuilder::create($options)
+            ->setLogger($logger)
+            ->getClient();
+
+        $client->captureException($exception);
+    }
+
     public function testProcessEventDiscardsEventWhenIgnoreTransactionsMatches(): void
     {
         $event = Event::createTransaction();

tests/Fixtures/code/CustomException.php

@@ -0,0 +1,9 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Sentry\Tests\Fixtures\code;
+
+class CustomException extends \RuntimeException
+{
+}