PHP receives HTTP POST data problem under different operating systems

Data | problem

Document Version

Version creation time creator note 1.0.0606.12003-6-6 Zheng first draft

Implementation Scope:

This document will explain the data issues that the PHP page receives from the HTTP component post. In general, POST the binary data stream, only need PHP with $http_raw_post_data can receive. However, this is not the case that we have encountered. Before continuing to read, we assume you are familiar with the following knowledge: N phpn MSXML2. SERVERXMLHTTPN HTTP POST

Phenomenon

we have this problem: I post binary data streams from Windows 2000 using the Msxml2.serverxmlhttp interface to the PHP page under Linux apche. The $http_raw_post_data variable for the PHP page is empty, the data is not available, and the value of sizeof ($_post) is also 0. However, if I POST data to a PHP page under Windows $http_raw_post_data IIS, I can receive normal data with the same. Why is there such a difference?

Environmental information

Initiating HTTP POST requester-system environment

Windows XP Professional (Service Pack 1) MSXML3.Dll (SP3/version number: 8.30.9926.0) The code to invoke ServerXMLHTTP is:        msxml2::iserverxmlhttprequestptr pixmlhttprequest = null;               HRESULT hr = pixmlhttprequest.createinstance ("MSXML2.") ServerXMLHTTP ");        hr = Pixmlhttprequest->open (L" POST ",                                                                    Bstrphpurl,                                                                   variant_false, //synchronous Send                                                                    vtmissing,                                                                   vtmissing);         hr = pixmlhttprequest->send (vardata); 

PHP for MS Windows System environment for correctly receiving post requests

PHP for Windows installation information that normally receives data with $http_raw_post_data: PHP Version 4.2.2SystemWindows NT 5.1 build 2600Server APICGI Related settings for using this global variable: directivelocal valuemaster valuealways_populate_raw_post_data00

Unable to receive POST request PHP for Linux system environment

PHP for Linux installation information that $http_raw_post_data receive POST data: PHP Version 4.3.2rc3system Linux atm2 2.4.18-1 #1 Wed May 29 10:45:2 3 CST 2002 i686 Server API Apache registered PHP Streams PHP, HTTP, FTP related settings for using this global variable: directivelocal valuemaster valueal Ways_populate_raw_post_dataonon

More information

logically said, as long as the php.ini defined; Always populate the $HTTP _raw_post_data variable.always_populate_raw_post_data = On can be used to receive data entirely with $http_raw_post_data variables. At least the $_post variable can be used to calculate the size of the data post to the page. I did see a few people trying to report "Empty $HTTP _raw_post_data" is a PHP bug, but the PHP maintainer says it's definitely not.

Resolution Steps

Do not know how the PHP 4.2.2 under Windows can always receive. But if I explicitly declare content-type as file, the PHP 4.3.2RC3 under Linux can receive post data normally. The code for setting header information is as follows: hr = Pixmlhttprequest->setrequestheader (                                                                  _bstr_t ( "Content-type"),                                                                   _bstr_t ("file");  do so, PHP 4.2.2 for Windows and PHP 4.3.2rc3 for Linux can all be $http_raw_post_data receive, no problem.  

Summarize:

If your $http_raw_post_data is not there, you can specify Content-type as file when you call the HTTP component to send an HTTP POST request.

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