diff --git a/examples/consumer-lowlevel.php b/examples/consumer-lowlevel.php
index 8811a0b..274b0f9 100644
--- a/examples/consumer-lowlevel.php
+++ b/examples/consumer-lowlevel.php
@@ -20,7 +20,7 @@ function (Consumer $consumer, int $level, string $facility, string $message): vo
     }
 );
 
-$conf->set('statistics.interval.ms', (string)1000);
+$conf->set('statistics.interval.ms', (string) 1000);
 $conf->setStatsCb(
     function (Consumer $consumer, string $json, int $jsonLength, $opaque): void {
         echo "stats: ${json}" . PHP_EOL;
@@ -29,7 +29,7 @@ function (Consumer $consumer, string $json, int $jsonLength, $opaque): void {
 
 $topicConf = new TopicConf();
 $topicConf->set('enable.auto.commit', 'true');
-$topicConf->set('auto.commit.interval.ms', (string)100);
+$topicConf->set('auto.commit.interval.ms', (string) 100);
 $topicConf->set('auto.offset.reset', 'earliest');
 var_dump($topicConf->dump());
 
diff --git a/examples/create-topic.php b/examples/create-topic.php
index 0fe43b5..118c41e 100644
--- a/examples/create-topic.php
+++ b/examples/create-topic.php
@@ -29,16 +29,16 @@
 $conf = new Conf();
 $conf->set('bootstrap.servers', $options['b']);
 $client = Client::fromConf($conf);
-$client->setWaitForResultEventTimeout((int)$options['w']);
+$client->setWaitForResultEventTimeout((int) $options['w']);
 $partitions = $options['p'];
 $replicationFactor = $options['r'];
 
 $results = $client->createTopics(
     [
         new NewTopic(
-            (string)$options['t'],
-            (int)$partitions,
-            (int)$replicationFactor
+            (string) $options['t'],
+            (int) $partitions,
+            (int) $replicationFactor
         ),
     ]
 );
diff --git a/examples/delete-topic.php b/examples/delete-topic.php
index 86e851e..be653f4 100644
--- a/examples/delete-topic.php
+++ b/examples/delete-topic.php
@@ -27,12 +27,12 @@
 $conf = new Conf();
 $conf->set('bootstrap.servers', $options['b']);
 $client = Client::fromConf($conf);
-$client->setWaitForResultEventTimeout((int)$options['w']);
+$client->setWaitForResultEventTimeout((int) $options['w']);
 
 $results = $client->deleteTopics(
     [
         new DeleteTopic(
-            (string)$options['t']
+            (string) $options['t']
         ),
     ]
 );
diff --git a/examples/describe-config.php b/examples/describe-config.php
index d7eb743..348f496 100644
--- a/examples/describe-config.php
+++ b/examples/describe-config.php
@@ -32,7 +32,7 @@
 
 $results = $client->describeConfigs(
     [
-        new ConfigResource((int)$options['t'], (string)$options['v']),
+        new ConfigResource((int) $options['t'], (string) $options['v']),
     ]
 );
 
diff --git a/examples/metadata.php b/examples/metadata.php
index ec656d4..2b25d7d 100644
--- a/examples/metadata.php
+++ b/examples/metadata.php
@@ -3,7 +3,6 @@
 declare(strict_types=1);
 
 use RdKafka\Conf;
-use RdKafka\FFI\Library;
 use RdKafka\Producer;
 
 require_once dirname(__DIR__) . '/vendor/autoload.php';