I'm trying to make it so when an admin types in a username they can upgrade their account to an admin. But when I do that it says that its been upgraded but in reality it isn't.

Here is the code:

Code:
	function AddAdmin(){
		
		$this->view->url	=	$this->config->url;
		$this->view->ID 	  = get_class($this);
		$this->view->Title = "iOwn > Admin > Edit Admin";
		
		$add = isset($_POST['add_username']) ? $_POST['add_username'] : '';

		$this->view->msg = "";
		$this->view->err = false;

		$sql = "SELECT * FROM users WHERE username = :username ";
		$arr = array(":username" => $add);
		$ctr = $this->database->DBCtr($sql,$arr);
		$this->view->admin = $ctr[0]['admin'];

		if($add == ""){
			$this->view->msg = "You must enter a username";
		}elseif($this->view->admin == 1){
			$this->view->msg = "This user is already an Admin";
		}elseif($ctr <= 0){
			$this->view->msg = "Users is Not Found";
		}else{
			$arr = array(":admin" => 1);
			$this->database->DBSet($arr,'users',$whr = 'WHERE username = '.$add);
			$this->view->msg = "Admin Rights Added";
			$this->view->err = true;
		}
		$this->view->render('Admin/AddAdmin');
				
	}
I have also tried to put
Code:
$this->view->yes = 1;
up above
Code:
$this->view->msg = "";
and then instead of
Code:
$arr = array(":admin" => 1);
I tried
Code:
$arr = array(":admin" => $this->view->yes);
And it still says that the admin rights have been added but in reality they haven't been.

Admin is a column in my database.