diff --git a/HttpServer/Client/Curl.php b/HttpServer/Client/Curl.php
index 81ddd214..030746bb 100644
--- a/HttpServer/Client/Curl.php
+++ b/HttpServer/Client/Curl.php
@@ -136,9 +136,7 @@ class Curl extends ClientAbstracts
 	 */
 	private function execute($curl): Result|bool|array|string
 	{
-		defer(function () {
-			$this->cleanData();
-		});
+		defer(fn() => $this->cleanData());
 		$output = curl_exec($curl);
 		if ($output === false) {
 			return $this->fail(400, curl_error($curl));
diff --git a/HttpServer/Client/Http2.php b/HttpServer/Client/Http2.php
index 1141c120..7080d72f 100644
--- a/HttpServer/Client/Http2.php
+++ b/HttpServer/Client/Http2.php
@@ -185,9 +185,7 @@ class Http2 extends Component
 		$request->headers = array_merge($request->headers, [
 			'Host' => $domain
 		]);
-		defer(function () use ($domain, $path, $request, $method) {
-			$this->channel->push($request, 'request.' . $method . $path);
-		});
+		defer(fn() => $this->channel->push($request, 'request.' . $method . $path));
 		return $this->doRequest($request, $domain, $isSsl, $timeout);
 	}
 
@@ -217,9 +215,7 @@ class Http2 extends Component
 	private function doRequest(Request $request, $domain, $ssl, $timeout): mixed
 	{
 		$client = $this->getClient($domain, $ssl, $timeout);
-		defer(function () use ($client, $domain) {
-			$this->channel->push($client, 'http2.' . $domain);
-		});
+		defer(fn() => $this->channel->push($client, 'http2.' . $domain));
 		$client->send($request);
 		if (Context::getContext('http2isRecv') === false) {
 			return null;
diff --git a/Rpc/Client.php b/Rpc/Client.php
index 32ed3fdc..ee639652 100644
--- a/Rpc/Client.php
+++ b/Rpc/Client.php
@@ -50,9 +50,7 @@ class Client extends Component
 		if ($isSend === false) {
 			return $this->addError($this->client->errMsg . '(' . $this->client->errCode . ')');
 		}
-		defer(function () {
-			$this->clientRecover();
-		});
+		defer(fn() => $this->clientRecover());
 		if (is_bool($unpack = Json::decode($this->client->recv()))) {
 			$unpack = $this->addError('Service return data format error(500)');
 		}