diff --git a/Kafka/Kafka.php b/Kafka/Kafka.php
index d59f1271..a3db972b 100644
--- a/Kafka/Kafka.php
+++ b/Kafka/Kafka.php
@@ -150,18 +150,18 @@ class Kafka extends \Snowflake\Process\Process
 		$conf->setRebalanceCb([$this, 'rebalanced_cb']);
 		$conf->set('group.id', $kafka['groupId']);
 		$conf->set('metadata.broker.list', $kafka['brokers']);
-		$conf->set('socket.timeout.ms', 30000);
+		$conf->set('socket.timeout.ms', '30000');
 
 		if (function_exists('pcntl_sigprocmask')) {
 			pcntl_sigprocmask(SIG_BLOCK, array(SIGIO));
-			$conf->set('internal.termination.signal', SIGIO);
+			$conf->set('internal.termination.signal', (string)SIGIO);
 		} else {
-			$conf->set('queue.buffering.max.ms', 1);
+			$conf->set('queue.buffering.max.ms', '1');
 		}
 
 		$topicConf = new TopicConf();
-		$topicConf->set('auto.commit.enable', 1);
-		$topicConf->set('auto.commit.interval.ms', 100);
+		$topicConf->set('auto.commit.enable', '1');
+		$topicConf->set('auto.commit.interval.ms', '100');
 		//smallest：简单理解为从头开始消费，largest：简单理解为从最新的开始消费
 		$topicConf->set('auto.offset.reset', 'smallest');
 		$topicConf->set('offset.store.path', 'kafka_offset.log');
diff --git a/System/Snowflake.php b/System/Snowflake.php
index 7c839132..48a2d7d9 100644
--- a/System/Snowflake.php
+++ b/System/Snowflake.php
@@ -175,7 +175,7 @@ class Snowflake
 	 */
 	public static function writeFile($fileName, $content, $is_append = null)
 	{
-		$params = [$fileName, $content];
+		$params = [$fileName, (string)$content];
 		if ($is_append !== null) {
 			$params[] = $is_append;
 		}