Php variable and xml processing

Question

Hello there,
I have a problem that is driving me crazy! I have a php file
which creates an xml string from a sql query. The problem is that I
need to use a variable from an swf file to create the query. All
this should happen when i click a button on the swf page. The xml
file is created no problem but the variable is not used. i am well
able to use these POST variables in other php files. As you can see
the php file is called twice in the action script. Is this the
problem. The line: xmlData.load("get_max_sess.php"); is fine. I
stuck the other on one in - loadVariablesNum ("get_max_sess.php",
0, "POST"); after the fact and this doesn't work. is there a
confilct in calling the same file twice? Is the sendAndLoad
function an option? Also included below is my php file.
Thanks so much. I really hope you can help me!
****************************************************ACTION
SCRIPT**********************************
call_btn.onRelease=function(){
function processXMLData(success)
{loadVariablesNum ("get_max_sess.php", 0, "POST");
if (success)
var rootNode=this.firstChild;
var contentNode=findNode(rootNode, "guit_vol");
guitVol=getValue(contentNode);
var authorNode=findNode(rootNode, "guit_pan");
guitPan=getValue(authorNode);
var contentNode=findNode(rootNode, "guit_vis");
visGuit=getValue(contentNode);
_root.guitVis.gotoAndStop(visGuit);
//assign xml info to musician objects
_root.guitObj.drag._y=guitVol;
_root.guitObj.drag._x=guitPan*2;
else
content="Today's news is not found";
function getValue(node)
if (node && node.firstChild)
return node.firstChild.nodeValue;
return "";
function findNode(node, nodeName)
if (node.nodeName==nodeName)
return node;
for (var i=0; node.childNodes &&
i<node.childNodes.length; i++)
var foundNode=findNode(node.childNodes
, nodeName);
if (foundNode!=null)
return foundNode;
return null;
var xmlData=new XML();
xmlData.ignoreWhite=true;
xmlData.onLoad=processXMLData;//when xml data loads the
function at the top executes
xmlData.load("get_max_sess.php"); //loads the xml data from
this location
stop();
****************************************************PHP
FILE**********************************
<?php
$user_id=$_POST['user_id'];
// query database for records
$connection = mysql_connect('localhost', 'm27849_martin',
'Geraldine1') or die ("Unable
to connect!");
mysql_select_db('m27849_liveroom') or die ("Unable to select
database!");
$query = "
SELECT a.guit_sess_id, a.guit_vol, a.guit_pan, a.guit_vis,
b.bass_sess_id, b.bass_vol, b.bass_pan, b.bass_vis, c.drum_sess_id,
c.drum_vol, c.drum_pan, c.drum_vis
FROM guit_info a, bass_info b, drum_info c, users_sessions d
WHERE d.session_id =(SELECT max(a.session_id) FROM
users_sessions a WHERE a.user_id = '$user_id')
AND a.guit_sess_id = d.session_id
AND b.bass_sess_id =a.guit_sess_id
AND c.drum_sess_id = b.bass_sess_id
//(SELECT userid from auth WHERE username ='martin')
//here a variable could be inserted to call the relevant row
(session)
$result = mysql_query($query) or die ("Error in query:
$query. " .
mysql_error());
$doc = new DomDocument('1.0');
//The first element we create in the XML document is known as
the root element. Each XML document must have 1, and only 1, root
element. In this example I have called it 'root', but you can use
whatever name you like (such as the name of the PHP script which is
executing). Note that you have to create the element and insert it
into the document with two functions.
// create root node
while($row = mysql_fetch_assoc($result)) {
$user = $doc->createElement('session');
$user = $doc->appendChild($user);
foreach ($row as $fieldname => $fieldvalue) {
//Note that here I create a new element for the field and
then insert it as a child to the current database row, as
identified in $occ.
$child = $doc->createElement($fieldname);
$child = $user->appendChild($child);
//Now I must add the field value as a text node, then insert
it as a child element to the current field node, as identified in
$child.
$value = $doc->createTextNode($fieldvalue);
$value = $child->appendChild($value);
//These loops do not terminate until they have processed
every column of every row which has been retrieved from the
database.
} // foreach
} // while
echo $doc->saveXML();
//echo $doc->saveXML($child);
mysql_close($connection);
//from:
http://www.tonymarston.net/php-mysql/dom.html
?>

Answer 1

Hi there,
I cracked it after a lot of to-ing and fro-ing! Apparently
you CAN send a variable and then load xml. Thanks so much for your
advice and interest. I am much obliged.
Marty Party
Check out my code below....
user_id=147;
submit_button.onRelease=function(){
function processXMLData(success)
if(success)
{_root.status_id="Success"
var rootNode=this.firstChild;
var contentNode=findNode(rootNode, "guit_vol");
guitVol=getValue(contentNode);
var authorNode=findNode(rootNode, "guit_pan");
guitPan=getValue(authorNode);
var contentNode=findNode(rootNode, "guit_vis");
visGuit=getValue(contentNode);
status_id=visGuit;
etc....
else
content="Today's news is not found";
function getValue(node)
if (node && node.firstChild)
return node.firstChild.nodeValue;
return "";
function findNode(node, nodeName)
if (node.nodeName==nodeName)
return node;
for (var i=0; node.childNodes &&
i<node.childNodes.length; i++)
var foundNode=findNode(node.childNodes
, nodeName);
if (foundNode!=null)
return foundNode;
return null;
var xmlData=new XML();
xmlData.ignoreWhite=true;
xmlData.onLoad=processXMLData;
//xmlData.load("get_max_sess.php");
var id:LoadVars = new LoadVars();
id.user_id = user_id;
//id.username = _root.username;
id.sendAndLoad("get_max_sess.php", xmlData, "POST");
Basic idea from
http://www.permadi.com/tutorial/flashXMLNewsExample/index.html
- Thank you!!