diff --git a/examples/client.php b/examples/client.php
index 89dd3ed..56e90fa 100644
--- a/examples/client.php
+++ b/examples/client.php
@@ -46,7 +46,10 @@ function remoteCall(string $host, $port, string $data) {
 }
 
 
-$ret = remoteCall("127.0.0.1", "5188", '{"controller":"site","methor":"test","params":{"id":1,"status":0}}');
+$ret = remoteCall("127.0.0.1", "5188", '{"controller":"site","methor":"test","params":{"id":1}}');
+
+//'{"controller":"site","methor":"test","params":{"id":"111"}}
+//'{"controller":"site","methor":"test","params":{"id":1,"status":0}}'
 echo "{$ret}\n";
 
 ?>
diff --git a/src/Pack.php b/src/Pack.php
index 616a9be..bd67136 100644
--- a/src/Pack.php
+++ b/src/Pack.php
@@ -139,12 +139,13 @@ class Pack {
      * @return string | boolean
      */
     public function unpack(string $pack) {
-        $ret = unpack($this->makeFormat(true), $pack);
-
-        if ($ret['type'] == self::DATA_TYPE_SAMPLE_DATA 
-                && $ret['length'] == strlen($ret['data'])
-                && (int) $ret['length'] <= self::$packageMaxLength) {
-            return $ret;
+        try {
+            $ret = unpack($this->makeFormat(true), $pack);
+            if ($ret['type'] === self::DATA_TYPE_SAMPLE_DATA && $ret['length'] == strlen($ret['data']) && (int) $ret['length'] <= self::$packageMaxLength) {
+                return $ret;
+            }
+        } catch (\Exception $e) {
+            return false;
         }
         return false;
     }