Is this possible?

[Kyttias]

Got it: It wasn't checking if it was a numeric value or not until I applied trim() to it to remove whitespace/linebreaks. I had no idea there were even there until I decided to echo the value to see what was going on.

Inside view/messagesview.php, my newpm() function now looks like this:

PHP Code:

$message = new PrivateMessage; 
// CHANGES START HERE

$title = "(no subject)"; // this way it'll never be blank
if($mysidia->input->get("id")){ // if there's an get value
    $where = trim($mysidia->input->get("id")); // trim the value
     if (!ctype_digit($where)) { // if its not numeric only
        $user = $where; // create a message to this user
    } else if (ctype_digit($where)){ // if it IS numeric only then it's a reply, so pull data        
        $oldMessage = new PrivateMessage($where); 
        $js = "<script>$('.content h2').text('Reply To Message');</script>"; // optional
        $user = $oldMessage->fromuser;            
        $title = "RE: ".$oldMessage->messagetitle;    
        $msg = "› {$user} wrote: ".$oldMessage->messagetext;
    }
}

// CHANGES END HERE
$editor = $message->getEditor(); 


Added in some optional javascript in the $js variable that should work if you have jQuery included. It'll change the title of the page to indicate it's a reply page, rather than continue to say its a new message page (assuming you're still using the h2 size for page titles, else change it).

Let me clarify that you should leave the url that sends a PM to a user alone in classes/class_userprofile.php. Keep it as it was - sending a username. Do NOT change it to send a user id.