php-PHP发布到AZURE连不上AZUREBLOB

在本地Apache和IIS7上运行正常 放到AZURE上就异常。
异常的代码：
ServicesBuilder::getInstance()->createBlobService($constr);
服务器上的error内容

    
HTTP Error 500.0 - Internal Server Error
 
The page cannot be displayed because an internal server error has occurred.
   
Most likely causes:
 
    
IIS received the request; however, an internal error occurred during the processing of the request. The root cause of this error depends on which module handles the request and what was happening in the worker process when this error occurred.
    
IIS was not able to access the web.config file for the Web site or application. This can occur if the NTFS permissions are set incorrectly.
    
IIS was not able to process configuration for the Web site or application.
     
The authenticated user does not have permission to use this DLL.
   
The request is mapped to a managed handler but the .NET Extensibility Feature is not installed.
 
 
   
Things you can try:
 
    
Ensure that the NTFS permissions for the web.config file are correct and allow access to the Web server's machine account.
     
Check the event logs to see if any additional information was logged.
  
Verify the permissions for the DLL.
    
Install the .NET Extensibility feature if the request is mapped to a managed handler.
  
Create a tracing rule to track failed requests for this HTTP status code. For more information about creating a tracing rule for failed requests, click here. 
 
 
   
Detailed Error Information:
  
 
Module
   FastCgiModule
 
Notification
   ExecuteRequestHandler
 
Handler
   PHP56_via_FastCGI
 
Error Code
   0x00000000
 
   
 
Requested URL
   http://**********
 
Physical Path
   D:\home\site\wwwroot\index.php
 
Logon Method
   Anonymous
 
Logon User
   Anonymous
 
   
   
More Information:
 This error means that there was a problem while processing the request. The request was received by the Web server, but during processing a fatal error occurred, causing the 500 error. 
View more information »
 
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