diff --git a/sample/abortMultipartUpload.php b/sample/abortMultipartUpload.php
index 50cd6da4..2a2887b3 100644
--- a/sample/abortMultipartUpload.php
+++ b/sample/abortMultipartUpload.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/blindWatermark.php b/sample/blindWatermark.php
index 2fc72534..b1eee5ae 100644
--- a/sample/blindWatermark.php
+++ b/sample/blindWatermark.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/catchException.php b/sample/catchException.php
index b44e6f1f..48e02640 100644
--- a/sample/catchException.php
+++ b/sample/catchException.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/ciTransformation.php b/sample/ciTransformation.php
index eece57ad..ad683863 100644
--- a/sample/ciTransformation.php
+++ b/sample/ciTransformation.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/completeMultipartUpload.php b/sample/completeMultipartUpload.php
index 35e0e04f..da5eee81 100644
--- a/sample/completeMultipartUpload.php
+++ b/sample/completeMultipartUpload.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/copy.php b/sample/copy.php
index b0e1d6ae..6ba9a896 100644
--- a/sample/copy.php
+++ b/sample/copy.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/copyObject.php b/sample/copyObject.php
index 813fc46b..6b496dd7 100644
--- a/sample/copyObject.php
+++ b/sample/copyObject.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/cosClient.php b/sample/cosClient.php
index b1a965bf..7e3d577d 100644
--- a/sample/cosClient.php
+++ b/sample/cosClient.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $token = "COS_TMPTOKEN"; //"云 API 临时密钥 Token"
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
diff --git a/sample/createBucket.php b/sample/createBucket.php
index eafad495..4c1a0fd6 100644
--- a/sample/createBucket.php
+++ b/sample/createBucket.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/createFolder.php b/sample/createFolder.php
index ccf3948a..91f54d8a 100644
--- a/sample/createFolder.php
+++ b/sample/createFolder.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/createMultipartUpload.php b/sample/createMultipartUpload.php
index bedca7e3..2d54dd73 100644
--- a/sample/createMultipartUpload.php
+++ b/sample/createMultipartUpload.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/deleteBucket.php b/sample/deleteBucket.php
index a3d1fc26..b7363001 100644
--- a/sample/deleteBucket.php
+++ b/sample/deleteBucket.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/deleteBucketCors.php b/sample/deleteBucketCors.php
index fc958e1a..16723194 100644
--- a/sample/deleteBucketCors.php
+++ b/sample/deleteBucketCors.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/deleteBucketDomain.php b/sample/deleteBucketDomain.php
index 5239fe6d..fae1a327 100644
--- a/sample/deleteBucketDomain.php
+++ b/sample/deleteBucketDomain.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/deleteBucketGuetzli.php b/sample/deleteBucketGuetzli.php
index f165e70d..73c181ff 100644
--- a/sample/deleteBucketGuetzli.php
+++ b/sample/deleteBucketGuetzli.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/deleteBucketImageStyle.php b/sample/deleteBucketImageStyle.php
index cc4a2959..64c03841 100644
--- a/sample/deleteBucketImageStyle.php
+++ b/sample/deleteBucketImageStyle.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/deleteBucketLifecycle.php b/sample/deleteBucketLifecycle.php
index dbe3183c..bc6c0f07 100644
--- a/sample/deleteBucketLifecycle.php
+++ b/sample/deleteBucketLifecycle.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/deleteBucketTagging.php b/sample/deleteBucketTagging.php
index 9341d2a5..2ea7545e 100644
--- a/sample/deleteBucketTagging.php
+++ b/sample/deleteBucketTagging.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/deleteBucketWebsite.php b/sample/deleteBucketWebsite.php
index a2b80141..47ac0639 100644
--- a/sample/deleteBucketWebsite.php
+++ b/sample/deleteBucketWebsite.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/deleteFolder.php b/sample/deleteFolder.php
index 61bec247..834d321c 100644
--- a/sample/deleteFolder.php
+++ b/sample/deleteFolder.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/deleteObject.php b/sample/deleteObject.php
index d89655e5..f872b055 100644
--- a/sample/deleteObject.php
+++ b/sample/deleteObject.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/deleteObjectTagging.php b/sample/deleteObjectTagging.php
index df6a2292..3144426a 100644
--- a/sample/deleteObjectTagging.php
+++ b/sample/deleteObjectTagging.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/detectLable.php b/sample/detectLable.php
index da120c10..29325893 100644
--- a/sample/detectLable.php
+++ b/sample/detectLable.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/download.php b/sample/download.php
index 2a0b2081..5f2c030d 100644
--- a/sample/download.php
+++ b/sample/download.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
@@ -14,8 +14,8 @@
             'secretKey' => $secretKey)));
 $local_path = "/data/exampleobject";
 
-$printbar = function($totolSize, $downloadedSize) {
-    printf("downloaded [%d/%d]\n", $downloadedSize, $totolSize);
+$printbar = function($totalSize, $downloadedSize) {
+    printf("downloaded [%d/%d]\n", $downloadedSize, $totalSize);
 };
 
 try {
diff --git a/sample/downloadFolder.php b/sample/downloadFolder.php
index 0297ad14..0eb422c8 100644
--- a/sample/downloadFolder.php
+++ b/sample/downloadFolder.php
@@ -2,9 +2,9 @@
 
 require dirname( __FILE__ ) . '/../vendor/autoload.php';
 
-$secretId = 'COS_SECRETID';
+$secretId = 'SECRETID';
 //'云 API 密钥 SecretId';
-$secretKey = 'COS_SECRETKEY';
+$secretKey = 'SECRETKEY';
 //'云 API 密钥 SecretKey';
 $region = 'ap-beijing';
 //设置一个默认的存储桶地域
diff --git a/sample/getBlindWatermark.php b/sample/getBlindWatermark.php
index 01a54bbd..ae3e2dd3 100644
--- a/sample/getBlindWatermark.php
+++ b/sample/getBlindWatermark.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/getBucketAcl.php b/sample/getBucketAcl.php
index 997c56f0..f291315d 100644
--- a/sample/getBucketAcl.php
+++ b/sample/getBucketAcl.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/getBucketCors.php b/sample/getBucketCors.php
index 55b347f9..79d17818 100644
--- a/sample/getBucketCors.php
+++ b/sample/getBucketCors.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/getBucketDomain.php b/sample/getBucketDomain.php
index 72caf276..bc358ba5 100644
--- a/sample/getBucketDomain.php
+++ b/sample/getBucketDomain.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/getBucketGuetzli.php b/sample/getBucketGuetzli.php
index b1f53956..86e45983 100644
--- a/sample/getBucketGuetzli.php
+++ b/sample/getBucketGuetzli.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/getBucketImageStyle.php b/sample/getBucketImageStyle.php
index bb479178..2c7a3d94 100644
--- a/sample/getBucketImageStyle.php
+++ b/sample/getBucketImageStyle.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/getBucketInventory.php b/sample/getBucketInventory.php
index f76f47fb..dc580a59 100644
--- a/sample/getBucketInventory.php
+++ b/sample/getBucketInventory.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/getBucketLifecycle.php b/sample/getBucketLifecycle.php
index aef6702c..06a82465 100644
--- a/sample/getBucketLifecycle.php
+++ b/sample/getBucketLifecycle.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/getBucketLogging.php b/sample/getBucketLogging.php
index 1bea1807..3305551e 100644
--- a/sample/getBucketLogging.php
+++ b/sample/getBucketLogging.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/getBucketTagging.php b/sample/getBucketTagging.php
index 344d253d..9c460ca6 100644
--- a/sample/getBucketTagging.php
+++ b/sample/getBucketTagging.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/getBucketWebsite.php b/sample/getBucketWebsite.php
index 3e5d76dc..01a42574 100644
--- a/sample/getBucketWebsite.php
+++ b/sample/getBucketWebsite.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/getObject.php b/sample/getObject.php
index cbc0da7f..d94add31 100644
--- a/sample/getObject.php
+++ b/sample/getObject.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/getObjectTagging.php b/sample/getObjectTagging.php
index ad8df15a..f3540df4 100644
--- a/sample/getObjectTagging.php
+++ b/sample/getObjectTagging.php
@@ -1,8 +1,8 @@
 <?php
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/getObjectUrl.php b/sample/getObjectUrl.php
index 656ffbde..56db03ab 100644
--- a/sample/getObjectUrl.php
+++ b/sample/getObjectUrl.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/getPresignedUrl.php b/sample/getPresignedUrl.php
index 2a507ecb..8633130d 100644
--- a/sample/getPresignedUrl.php
+++ b/sample/getPresignedUrl.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/headBucket.php b/sample/headBucket.php
index 2f8d0c77..27bc6578 100644
--- a/sample/headBucket.php
+++ b/sample/headBucket.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/headObject.php b/sample/headObject.php
index 0d6ba2b5..90d8dc70 100644
--- a/sample/headObject.php
+++ b/sample/headObject.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/imageAve.php b/sample/imageAve.php
index 3227e1ee..112f3481 100644
--- a/sample/imageAve.php
+++ b/sample/imageAve.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/imageExif.php b/sample/imageExif.php
index 877aae7b..4194c4b1 100644
--- a/sample/imageExif.php
+++ b/sample/imageExif.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/imageInfo.php b/sample/imageInfo.php
index 11780837..77a04e9d 100644
--- a/sample/imageInfo.php
+++ b/sample/imageInfo.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/imageMogr.php b/sample/imageMogr.php
index 5b60d2fd..8d5beb3a 100644
--- a/sample/imageMogr.php
+++ b/sample/imageMogr.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/imageProcess.php b/sample/imageProcess.php
index 7b231713..0327e73f 100644
--- a/sample/imageProcess.php
+++ b/sample/imageProcess.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/imageView.php b/sample/imageView.php
index 1bf41b54..9ee081fb 100644
--- a/sample/imageView.php
+++ b/sample/imageView.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/imageWatermark.php b/sample/imageWatermark.php
index f921f506..ab0341a0 100644
--- a/sample/imageWatermark.php
+++ b/sample/imageWatermark.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/listBucket.php b/sample/listBucket.php
index 6dfcf9a6..7a834210 100644
--- a/sample/listBucket.php
+++ b/sample/listBucket.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/listMultipartUploads.php b/sample/listMultipartUploads.php
index 35c81008..6a9f8dd7 100644
--- a/sample/listMultipartUploads.php
+++ b/sample/listMultipartUploads.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/listObjects.php b/sample/listObjects.php
index 6a4f2a11..7a348669 100644
--- a/sample/listObjects.php
+++ b/sample/listObjects.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/listParts.php b/sample/listParts.php
index 6b18478d..5b8f2f4c 100644
--- a/sample/listParts.php
+++ b/sample/listParts.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/picOperations.php b/sample/picOperations.php
index be7b03e4..bf92c76b 100644
--- a/sample/picOperations.php
+++ b/sample/picOperations.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/putBlindWatermark.php b/sample/putBlindWatermark.php
index d5f9e0f0..ba962a5d 100644
--- a/sample/putBlindWatermark.php
+++ b/sample/putBlindWatermark.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/putBucketAcl.php b/sample/putBucketAcl.php
index c5b475fc..2b8bf3e3 100644
--- a/sample/putBucketAcl.php
+++ b/sample/putBucketAcl.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/putBucketCors.php b/sample/putBucketCors.php
index 375077bf..f573572f 100644
--- a/sample/putBucketCors.php
+++ b/sample/putBucketCors.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/putBucketDomain.php b/sample/putBucketDomain.php
index 480e3206..c6dc59a9 100644
--- a/sample/putBucketDomain.php
+++ b/sample/putBucketDomain.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/putBucketGuetzli.php b/sample/putBucketGuetzli.php
index d0bd12a9..13c5582a 100644
--- a/sample/putBucketGuetzli.php
+++ b/sample/putBucketGuetzli.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/putBucketImageStyle.php b/sample/putBucketImageStyle.php
index 9fbb6717..1599e1b3 100644
--- a/sample/putBucketImageStyle.php
+++ b/sample/putBucketImageStyle.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/putBucketInventory.php b/sample/putBucketInventory.php
index 7b0eb2ec..de818918 100644
--- a/sample/putBucketInventory.php
+++ b/sample/putBucketInventory.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/putBucketLifecycle.php b/sample/putBucketLifecycle.php
index 96cad2ae..fcfe4901 100644
--- a/sample/putBucketLifecycle.php
+++ b/sample/putBucketLifecycle.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/putBucketLogging.php b/sample/putBucketLogging.php
index cc6911f2..0a57ab82 100644
--- a/sample/putBucketLogging.php
+++ b/sample/putBucketLogging.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/putBucketTagging.php b/sample/putBucketTagging.php
index 06cb9eb7..4db79172 100644
--- a/sample/putBucketTagging.php
+++ b/sample/putBucketTagging.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/putBucketWebsite.php b/sample/putBucketWebsite.php
index 34421dec..bab998ff 100644
--- a/sample/putBucketWebsite.php
+++ b/sample/putBucketWebsite.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/putImageStyle.php b/sample/putImageStyle.php
index 90b4b017..20689d01 100644
--- a/sample/putImageStyle.php
+++ b/sample/putImageStyle.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/putObject.php b/sample/putObject.php
index b97c5d03..967f5787 100644
--- a/sample/putObject.php
+++ b/sample/putObject.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/putObjectTagging.php b/sample/putObjectTagging.php
index 6112ca44..9f01de9f 100644
--- a/sample/putObjectTagging.php
+++ b/sample/putObjectTagging.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/putQrcode.php b/sample/putQrcode.php
index 11147b89..af720de8 100644
--- a/sample/putQrcode.php
+++ b/sample/putQrcode.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/qrcode.php b/sample/qrcode.php
index 58431195..fc528c4e 100644
--- a/sample/qrcode.php
+++ b/sample/qrcode.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/qrcodeGenerate.php b/sample/qrcodeGenerate.php
index 94c8b0cd..00568e27 100644
--- a/sample/qrcodeGenerate.php
+++ b/sample/qrcodeGenerate.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/restoreObject.php b/sample/restoreObject.php
index ce819549..485d7fd6 100644
--- a/sample/restoreObject.php
+++ b/sample/restoreObject.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/selectObjectContent.php b/sample/selectObjectContent.php
index e5e79946..e3233057 100644
--- a/sample/selectObjectContent.php
+++ b/sample/selectObjectContent.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(array(
     'region' => $region,
diff --git a/sample/textWatermark.php b/sample/textWatermark.php
index 83622ea5..4227bef1 100644
--- a/sample/textWatermark.php
+++ b/sample/textWatermark.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/sample/upload.php b/sample/upload.php
index 7ef439fb..178f6f24 100644
--- a/sample/upload.php
+++ b/sample/upload.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
@@ -14,8 +14,8 @@
             'secretKey' => $secretKey)));
 $local_path = "/data/exampleobject";
 
-$printbar = function($totolSize, $uploadedSize) {
-    printf("uploaded [%d/%d]\n", $uploadedSize, $totolSize);
+$printbar = function($totalSize, $uploadedSize) {
+    printf("uploaded [%d/%d]\n", $uploadedSize, $totalSize);
 };
 
 try {
diff --git a/sample/uploadFolder.php b/sample/uploadFolder.php
index 6b93925b..389fc58c 100644
--- a/sample/uploadFolder.php
+++ b/sample/uploadFolder.php
@@ -2,9 +2,9 @@
 
 require dirname( __FILE__ ) . '/../vendor/autoload.php';
 
-$secretId = 'COS_SECRETID';
+$secretId = 'SECRETID';
 //'云 API 密钥 SecretId';
-$secretKey = 'COS_SECRETKEY';
+$secretKey = 'SECRETKEY';
 //'云 API 密钥 SecretKey';
 $region = 'ap-beijing';
 //设置一个默认的存储桶地域
diff --git a/sample/uploadPart.php b/sample/uploadPart.php
index d2558070..54df340c 100644
--- a/sample/uploadPart.php
+++ b/sample/uploadPart.php
@@ -2,8 +2,8 @@
 
 require dirname(__FILE__) . '/../vendor/autoload.php';
 
-$secretId = "COS_SECRETID"; //"云 API 密钥 SecretId";
-$secretKey = "COS_SECRETKEY"; //"云 API 密钥 SecretKey";
+$secretId = "SECRETID"; //"云 API 密钥 SecretId";
+$secretKey = "SECRETKEY"; //"云 API 密钥 SecretKey";
 $region = "ap-beijing"; //设置一个默认的存储桶地域
 $cosClient = new Qcloud\Cos\Client(
     array(
diff --git a/src/Qcloud/Cos/MultipartUpload.php b/src/Qcloud/Cos/MultipartUpload.php
index e38ddd40..2f928ff6 100644
--- a/src/Qcloud/Cos/MultipartUpload.php
+++ b/src/Qcloud/Cos/MultipartUpload.php
@@ -19,7 +19,7 @@ class MultipartUpload {
     private $parts;
     private $body;
     private $progress;
-    private $totolSize;
+    private $totalSize;
     private $uploadedSize;
 
     public function __construct($client, $body, $options = array()) {
@@ -30,11 +30,11 @@ public function __construct($client, $body, $options = array()) {
         $this->options = $options;
         $this->partSize = $this->calculatePartSize($minPartSize);
         $this->concurrency = isset($options['Concurrency']) ? $options['Concurrency'] : 10;
-        $this->progress = isset($options['Progress']) ? $options['Progress'] : function($totolSize, $uploadedSize) {};
+        $this->progress = isset($options['Progress']) ? $options['Progress'] : function($totalSize, $uploadedSize) {};
         $this->parts = [];
         $this->partNumberList = [];
         $this->uploadedSize = 0;
-        $this->totolSize = $this->body->getSize();
+        $this->totalSize = $this->body->getSize();
         $this->needMd5 = isset($options['ContentMD5']) ? $options['ContentMD5'] : true;
         $this->retry = isset($options['Retry']) ? $options['Retry'] : 3;
     }
@@ -66,8 +66,8 @@ public function uploadParts($uploadId) {
                 }
                 $body = $this->body->read($this->partSize);
                 $partSize = $this->partSize;
-                if ($offset + $this->partSize >= $this->totolSize) {
-                    $partSize = $this->totolSize - $offset;
+                if ($offset + $this->partSize >= $this->totalSize) {
+                    $partSize = $this->totalSize - $offset;
                 }
                 $offset += $partSize;
                 if (empty($body)) {
@@ -107,7 +107,7 @@ public function uploadParts($uploadId) {
                 $part = array('PartNumber' => $partNumber, 'ETag' => $etag);
                 $this->parts[$partNumber] = $part;
                 $this->uploadedSize += $partSize;
-                call_user_func_array($this->progress, [$this->totolSize, $this->uploadedSize]);
+                call_user_func_array($this->progress, [$this->totalSize, $this->uploadedSize]);
             },
            
             'rejected' => function ($reason, $index) {
diff --git a/src/Qcloud/Cos/RangeDownload.php b/src/Qcloud/Cos/RangeDownload.php
index e521ac0a..fb13e241 100644
--- a/src/Qcloud/Cos/RangeDownload.php
+++ b/src/Qcloud/Cos/RangeDownload.php
@@ -14,7 +14,7 @@ class RangeDownload {
     private $partSize;
     private $parts;
     private $progress;
-    private $totolSize;
+    private $totalSize;
     private $resumableJson;
 
     public function __construct( $client, $contentLength, $saveAs, $options = array() ) {
@@ -22,13 +22,13 @@ public function __construct( $client, $contentLength, $saveAs, $options = array(
         $this->options = $options;
         $this->partSize = isset( $options['PartSize'] ) ? $options['PartSize'] : self::DEFAULT_PART_SIZE;
         $this->concurrency = isset( $options['Concurrency'] ) ? $options['Concurrency'] : 10;
-        $this->progress = isset( $options['Progress'] ) ? $options['Progress'] : function( $totolSize, $downloadedSize ) {
+        $this->progress = isset( $options['Progress'] ) ? $options['Progress'] : function( $totalSize, $downloadedSize ) {
         }
         ;
         $this->parts = [];
         $this->partNumberList = [];
         $this->downloadedSize = 0;
-        $this->totolSize = $contentLength;
+        $this->totalSize = $contentLength;
         $this->saveAs = $saveAs;
         $this->resumableJson = [];
         $this->resumableJson = isset( $options['ResumableJson'] ) ? $options['ResumableJson'] : [];
@@ -83,10 +83,10 @@ public function donwloadParts() {
         $uploadRequests = function () {
             $index = 1;
             $partSize = 0;
-            for ( $offset = 0; $offset < $this->totolSize; ) {
+            for ( $offset = 0; $offset < $this->totalSize; ) {
                 $partSize = $this->partSize;
-                if ( $offset + $this->partSize >= $this->totolSize ) {
-                    $partSize = $this->totolSize - $offset;
+                if ( $offset + $this->partSize >= $this->totalSize ) {
+                    $partSize = $this->totalSize - $offset;
                 }
                 $this->parts[$index]['PartSize'] = $partSize;
                 $this->parts[$index]['Offset'] = $offset;
@@ -107,7 +107,7 @@ public function donwloadParts() {
                 } else {
                     $this->resumableJson['DownloadedBlocks'][] = ['from' => $begin, 'to' => $end];
                     $this->downloadedSize += $partSize;
-                    call_user_func_array( $this->progress, [$this->totolSize, $this->downloadedSize] );
+                    call_user_func_array( $this->progress, [$this->totalSize, $this->downloadedSize] );
                 }
                 $offset += $partSize;
             }
@@ -133,7 +133,7 @@ public function donwloadParts() {
                 $this->resumableJson['DownloadedBlocks'][] = ['from' => $begin, 'to' => $end];
                 $partSize = $this->parts[$index]['PartSize'];
                 $this->downloadedSize += $partSize;
-                call_user_func_array( $this->progress, [$this->totolSize, $this->downloadedSize] );
+                call_user_func_array( $this->progress, [$this->totalSize, $this->downloadedSize] );
             }
             ,
             'rejected' => function ( $reason, $index ) {
diff --git a/src/Qcloud/Cos/ResultTransformer.php b/src/Qcloud/Cos/ResultTransformer.php
index bb7e0766..26bc3250 100644
--- a/src/Qcloud/Cos/ResultTransformer.php
+++ b/src/Qcloud/Cos/ResultTransformer.php
@@ -140,9 +140,9 @@ public function getSelectContents($result) {
             if (empty($tmp)) {
                 break;
             }
-            $totol_length = (int)(unpack("N", $tmp)[1]);
+            $total_length = (int)(unpack("N", $tmp)[1]);
             $headers_length = (int)(unpack("N", $f->read(4))[1]);
-            $body_length = $totol_length - $headers_length - 16;
+            $body_length = $total_length - $headers_length - 16;
             $predule_crc = (int)(unpack("N", $f->read(4))[1]);
             $headers = array();
             for ($offset = 0; $offset < $headers_length;) {