fix test

Author: lewzylu

sample.php

@@ -654,4 +654,35 @@
     print_r($result);
 } catch (\Exception $e) {
     echo "$e\n";
+}
+
+
+## 删除某些前缀的空bucket
+function startsWith($haystack, $needle)
+{
+    $length = strlen($needle);
+    return (substr($haystack, 0, $length) === $needle);
+}
+
+try {
+    $result = $cosClient->listBuckets();
+    foreach ($result['Buckets'] as $bucket){
+        $region = $bucket['Location'];
+        $name = $bucket['Name'];
+        if (startsWith($name,'lewzylu')){
+            try {
+                $cosClient2 = new Qcloud\Cos\Client(array('region' => $region,
+                    'credentials'=> array(
+                        'secretId'    => getenv('COS_KEY'),
+                        'secretKey' => getenv('COS_SECRET'))));
+                $rt = $cosClient2->deleteBucket(array('Bucket' => $name));
+                print_r($rt);
+            }catch (\Exception $e) {
+            }
+        }
+
+
+    }
+} catch (\Exception $e) {
+    echo "$e\n";
 }

src/Qcloud/Cos/Signature.php

@@ -34,9 +34,9 @@ public function signRequest(RequestInterface $request) {
 
     public function createPresignedUrl(
         RequestInterface $request,
-        $expires = 3600
+        $expires = "10 minutes"
     ) {
-        $signTime = (string)(time() - 60) . ';' . (string)(time() + (int)$expires);
+        $signTime = (string)(time() - 60) . ';' . (string)(strtotime($expires));
         $httpString = strtolower($request->getMethod()) . "\n" . urldecode($request->getPath()) .
             "\n\nhost=" . $request->getHost() . "\n";
         $sha1edHttpString = sha1($httpString);