[Chameleon] Problem with new widget - adapt php code

[Ines]

Hello, I´m tring to create a new widget. It is very simple but I have a
problem doing it.

The function of my new widget is: upload files to the server.

I have proved a php code out of the ms4w, and it works wery well. Now I
added this code to my new widget but the problem is that my application is
reinitiated permanently when I execute the widget.
And I have some doubts about the sintax of the code in the widget.
I send:
1) the php code
2) The code of the template.html and the code of the widget with my doubts.

PHP CODE:
----------------------------------------------------------------------------
-------
upfile.php:
--------------------
<form action="subearchivo.php" method="post" enctype="multipart/form-data">
    <b>Enter an XML file: </b>
    <br>
    <input name="userfile" type="file">
    <br>
    <input type="submit" value="Submit">
</form>
---------------------------
subearchivo.php:
------------------------------------
<?
//datos del arhivo
$name_file = $HTTP_POST_FILES['userfile']['name'];
$type_file = $HTTP_POST_FILES['userfile']['type'];
$size_file = $HTTP_POST_FILES['userfile']['size'];
//I verify if the characteristics of the file are those that desire
if (!(strpos($type_file, "xml"))) {
    echo "The extension is not correct. <br><br><table><tr><td><li>It Allows
files .xml
<br><li>.</td></tr></table>";
}else{
    if (move_uploaded_file($HTTP_POST_FILES['userfile']['tmp_name'],
"wmsviewer/geointegrator/htdocs/$name_file")){
//I rename the file to upload it to the the server with the name I want
	rename("wmsviewer/geointegrator/htdocs/$name_file",
"wmsviewer/geointegrator/htdocs/archivo.xml");
       echo "The upload is success.";
    }else{
       echo "Error to upload the file.";
    }
}
?>

------------------------------------------------------
Template.html
--------------------------------------------------
In the template.html of muy application I changed this line:
<form method="post">
for this line (like upfile.php):
<form method="post" enctype="multipart/form-data">
And the tag of the widget is:
<cwc2 type="Subexml"
     sube="bb"
     imagetip="Search"
     image="icons/icon_ok.png"
     styleresource="NavButtons"
     imagewidth="25"
     SubmitOnClick="true"
     toolset="nav"> <image state="normal"/> <image state="hover"/> <image
state="selected"/>
	 </cwc2>

-------------------------------------------------------
Widget:
---------------------------------------------
function DrawPublish()
    {
        // init vars
		$szReturn = "<font color='#000000' size='2' face='Arial, Helvetica,
sans-serif'>Enter an XML file: </font><input name='userfile' type='file'> ";

        // execute parent
        $szReturn .= parent::DrawPublish();

        // return
        return $szReturn;

    // end DrawPublish() function
    }
----------------------------

 function  ParseURL()
    {
        // execute parent function
        parent::ParseURL();
if ( $this->isVarSet( "NAV_CMD" ) &&
                            $this->getVar( "NAV_CMD" ) == 'Subexml' )
{
	if ( $this->mszCoords == 'bb')
	{
		if ($this->isVarSet('userfile'))
		{
			$this->getVar('userfile');
			$this->name_file = $HTTP_POST_FILES['userfile']['name'];
			$this->type_file = $HTTP_POST_FILES['userfile']['type'];
			$this->size_file = $HTTP_POST_FILES['userfile']['size'];
			if (!(strpos($this->type_file, "xml"))) {
			    echo "The extension is not correct. <br><br><table><tr><td><li>It
Allows files .xml
<br><li>.</td></tr></table>";
			}else{
			    if (move_uploaded_file($HTTP_POST_FILES['userfile']['tmp_name'],
"wmsviewer/geointegrator/htdocs/$this->name_file")){
					rename("wmsviewer/geointegrator/htdocs/$this->name_file",
"wmsviewer/geointegrator/htdocs/archivo.xml");
			       echo "The upload is success.";
			    }else{
			       echo "Error to upload the file.";
    			}
			}
		}
	}
}

With this code my application ever is looping.
First, I select a file to upload in the server, and the I click the button
of the new widget. And then the application is refreshing, and refreshing
and refreshing.....
a) I'm not sure if is correct this new code in the template:
<form method="post" enctype="multipart/form-data">
b) and if the widget support the $HTTP_POST_FILES sintax
c) and if the url to upload the file is correct:
wmsviewer/geointegrator/htdocs/$this->name_file
d)And if I have to do domethig more to adapt the code to the new widget.

Than you very much!
Ines