Na cosa così:

Codice PHP:
<?
if(isset($_POST['clicca']))
{
    
$name        getparam("name",         PAR_POST,   SAN_FLAT);
    
$description getparam("description",         PAR_POST,   SAN_FLAT);
    
$add         getparam("addmember",         PAR_POST,   SAN_FLAT);
    
$remove      getparam("remove",         PAR_POST,   SAN_FLAT);
    
$locked      getparam("locked",         PAR_POST,   SAN_FLAT);
    
$string      get_file("misc/groups/1.xml");
    
$name        get_xml_element("name",$string);
    
$description get_xml_element("description",$string);
    
$mem     get_xml_element("members",$string);
    
$mem      $mem."caxxo".",";
    
$locked      get_xml_element("locked",$string);
    if(
$remove != "")
    {
           
$remove  $remove.",";
    }
    
$mem     str_replace($remove,"",$mem);
    
$found false;
    for(
$i 0$i count($array); $i++)
    {
          if(
$add == $array[$i])
          {
                 
$found true;
          }
    }
   
$write        "<name>$name</name>\n";
   
$write       .= "<description>$description</description>\n";
   
$write       .= "<members>$mem</members>\n";
   
$write       .= "<locked>$locked</locked>\n";
   
fnwrite("misc/groups/1.xml"$write"w", array("nonull"));
   if(isset(
$_GET['mod']))
   {
        
$modname getparam("mod",PAR_GET,SAN_FLAT);
   }
   echo 
"<div style=\" width: 100%; border: 1px solid #00FF00;\">
"
;
   echo 
"<center>[b]Modifica avvenuta con successo![/b]</center>
</div>"
;
   
// echo"<a href=\"index.php?mod=$modname&id=$id\"></a><meta    http-equiv=\"Refresh\" content=\"2; URL=index.php?mod=$modname&id=$id\">";
}
            
?> 
<form name="form1" action="script.php">
<input type='submit' name='clicca' value=' OK '>
</form>