PHP Example XML-RPC Client

This uses the excellent XML-RPC library provided by Keith Devens. I started using the one built in with PHP 4.3.0 and later but this one is really convenient and provides super debugging info, plus you don't have to worry about the functions breaking in a new PHP version. Info here and download here. Rename the "source" file to something like xmlrpc.inc and include("xmlrpc.inc";

EDIT: You don't have to worry about the functions breaking in a new PHP version, unless the new version breaks the functions, as detailed in Gwnyeth's post below. I guess you can never win.

<?php 

include("xmlrpc.inc");

define("XMLRPC_DEBUG", 1);

$channel = "1c36254b-d1c1-0ac0-9635-4edfb2db218b";
$strValue = "Hello Second World!";
$intValue = 1;

$array["Channel"] = $channel;
$array["IntValue"] = $intValue;
$array["StringValue"] = $strValue;

list($success, $response) = XMLRPC_request('xmlrpc.secondlife.com',
                            '/cgi-bin/xmlrpc.cgi', 'llRemoteData', array(XMLRPC_prepare($array)));

if ($success) {
    print "StringValue: " . $response["StringValue"] . "\n<br>IntValue: " . $response["IntValue"];
} else {
    print "<h3>Failure</h3>\n";
    print "<strong>faultCode:</strong> " . $response['faultCode'] .
          "<br>\n";
    print "<strong>faultString:</strong> " . $response['faultString'] .
          "<br><br>\n";
}

print "<hr><br>\n\n";

XMLRPC_debug_print();

?>

Note that this uses a hardcoded channel. From my limited testing an lsl script will retain it's channel until you change the script, which from the SL server perspective makes it a new script. So you end up doing a lot of copy-paste between the lsl and your php, but I really don't know of any way to get the channel to the server. I don't own my own server, I don't have the ability to setup an e-mail trap and parse mail messages, not even considering the 20 second delay that imposes plus any additional mail routing delays.

Some additional info about error codes (I will update this as I stumble upon more potential errors), faultCode 1 means the script timed out. This could mean the object isn't rezzed, llOpenDataChannel() never got called, or the script received the call successfully but never returned anything. You should always return at least an integer code to let the client know what happened. faultCode 2 means the specified channel wasn't found. This apparently means a channel that has never been created, because if a channel is created and that script (and/or containing object) is destroyed, the channel is still valid. If you accidentally pass something other than llRemoteData for the function call name you'll get an error code like -32,000 something.

This is awesome, thanks man .. been looking through it

Just a slight warning. I've been using Keith Devens most excellent XML-RPC Library for almost two years now (well, since finding this post really!) and it worked flawlessly... until I upgraded from PHP4 to PHP5! Make sure you have allow_call_time_pass_reference = On on your /etc/php.ini file!

There's a way to have that channel code, if you use a post request from SL to a random website, where you can run php script and save a file.
The channel will be sent only on rez, attach, inventory change (perhaps?).. think that's the most used times when the key changes.
using llHTMLRequest, you simply post the key (uuid) to a php script that will write it on a specific file, on webserver. If it's in the same webserver as "hello world", you change $channel_id="..replace..."; with content of that new created file.

Hope it will help you
Required: 1 lsl script+1 php that create a file on disk.

Woohoo! We have a winner!

This one goes in the necro-posting record books.

Impressive! It takes a lot of work to find a thread that's been dead and undisturbed this long. Way to go!!!

AND, it was already a necropost when the previous respondent answered in 2006!!!