returning functions

[sde]

i'm working on a new project that has many db functions. Before i ask the question, i'll show an example of some code:

PHP Code:

<?
deleteAgent($agent_id)
{
  $result=mysql_query("delete from agents where agent_id='$agent_id'");
  $num=mysql_numrows($result);
  
  if($num == 0)
  {
    return 0;
  }
  else
  {
    return 1;
  }
}
?>

is this the best way to return 1 if the query actually executed something? for example, i want to use the function like this:

PHP Code:

<?
if(deleteAgent($agent_id))
{
  echo "Agent delted successfully.";
}
else
{
  echo "There was an error deleting this agent.";
}
?>

it seems like a simple thing to do, .. i'm just making sure this is the best way to do it.

[redhead]

Why not just return $num ??

Then just have:

if(!deleteAgent($someAgent))
echo "Error deleting";
else
echo "Deleted";

--Edit---
I would go for this, since the code itself is explaining just what it does..