AS3 to PHP simple object conversion

programming flash
1

AS3 code



<fx:Declarations>
    <!-- this is the RemoteObject  used to make the RPC calls -->
    <mx:RemoteObject id="myRemote" destination="MyService" source="MyService"[INDENT=2]        endpoint="http://localhost/amfphp/gateway.php"                
            showBusyCursor="true"/>[/INDENT]
        
</fx:Declarations>
protected function button1_clickHandler(event:MouseEvent):void
{
    var aut:VOAuthor;  // value object class
    aut = new VOAuthor();
    aut.id_aut = 3;
    aut.fname_aut = "test";
    aut.lname_aut = "123";
    myRemote.saveData(aut);
}

Receving PHP code


public function saveData($author) 
{
   $mysql = mysql_connect("localhost", "mx112", "xxxxxx");          
   mysql_select_db("flex360");      
   $query = "INSERT INTO authors (fname_aut, lname_aut) VALUES ('".$author->fname_aut."', '".$author->lname_aut."')";          
$result = mysql_query($query);                 
 return $author;
}


<?php
class VOAuthor {    public $id_aut;    public $fname_aut;    public $lname_aut;        var $_explicitType="org.corlan.VOAuthor";}?>

Flex network monitor response : Raw view


{lname_aut=123, _explicitType=org.corlan.VOAuthor, fname_aut=test, id_aut=3}

but If I do this at the end of the php code


return $author->lname_aut;

network monitor response is NULL

so the problem is I can print the array but how to cast tht array to a known php type ?
After 5 days I finnaly figured out flex and mysql using amfphp (-: any one please help ?