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Date: Fri, 4 May 2007 22:18:47 +0200
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Subject: Bug? Raw POST data in PHP 5.2.2, take two
From: dirk@haun-online.de ("Dirk Haun")

I believe this is a bug in PHP 5.2.2. I've tried to report this for PHP
5.2.2RC2 but apparently wasn't making myself clear or wasn't following
the proper procedures ...

Anyway, as I wrote before[1], "raw" POST data isn't making it through in
PHP 5.2.2 which results in XML-RPC communications to fail, at least when
using the PEAR::XML_RPC package.

Consider this little script (send.php):

--- snip ---
<?php

require_once 'XML/RPC.php';

$sourceURI = 'http://www.example.com/'; // doesn't matter here
$targetURI = $sourceURI;

$client = new XML_RPC_Client('/receive.php', $_SERVER['HTTP_HOST']);
$client->setDebug(1);
$msg = new XML_RPC_Message('pingback.ping',
        array(new XML_RPC_Value($sourceURI, 'string'),
              new XML_RPC_Value($targetURI, 'string')));

$response = $client->send($msg, 0, 'http');

?>
--- snip ---

This makes a simple XML-RPC call as used for Pingbacks. For the
receiving end of the communication, let's use this as receive.php:

--- snip ---
<?php

print_r(getallheaders());

echo $GLOBALS['HTTP_RAW_POST_DATA'] . "\n\n";

?>
--- snip ---

Now when I call up send.php (both located in the web root of a server
running PHP 5.2.2), I get this output:

---GOT---
HTTP/1.1 200 OK
Date: Fri, 04 May 2007 20:07:58 GMT
Server: Apache/1.3.37 (Unix) PHP/5.2.2
X-Powered-By: PHP/5.2.2
Connection: close
Content-Type: text/html

Array
(
    [Content-Length] => 282
    [Content-Type] => text/xml
    [Host] => myhost.example.com
    [User-Agent] => PEAR XML_RPC
)
<br />
<b>Notice</b>:  Undefined index:  HTTP_RAW_POST_DATA in <b>/usr/local/
apache/vhost/geeklog/public_html/receive.php</b> on line <b>5</b><br />

---END---

So $GLOBALS['HTTP_RAW_POST_DATA'] is not set. The PEAR::XML_RPC package
actually uses $HTTP_RAW_POST_DATA on the receiving end, but that doesn't
appear to be set either. And the always_populate_raw_post_data option in
php.ini doesn't make a difference.

Switching back to PHP 5.2.1 (same machine, same configuration) makes
everything work as expected:

---GOT---
HTTP/1.1 200 OK
Date: Fri, 04 May 2007 20:11:28 GMT
Server: Apache/1.3.37 (Unix) PHP/5.2.1
X-Powered-By: PHP/5.2.1
Connection: close
Content-Type: text/html

Array
(
    [Content-Length] => 282
    [Content-Type] => text/xml
    [Host] => myhost.example.com
    [User-Agent] => PEAR XML_RPC
)
<?xml version="1.0" encoding="UTF-8"?>
<methodCall>
<methodName>pingback.ping</methodName>
<params>
<param>
<value><string>http://www.example.com/</string></value>
</param>
<param>
<value><string>http://www.example.com/</string></value>
</param>
</params>
</methodCall>

---END---

This is on a Linux box, but I have confirmation (thanks, Mike) of the
same thing happening on Windows.

Can anyone please

1) confirm this or tell me what I'm doing wrong and
2) tell me what else I should have done (other than posting here and
emailing Ilia, as the PHP 5 release manager), in case I ever run into
something similar again.

Thanks.

bye, Dirk

[1] <http://news.php.net/php.internals/29103>


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