wont unlink file from dir?

[$php_mysql$]

any help with this please? it works fine with deleting database results but the unlink wont unlink file from dir?

 

else if($action=="del")
{
    $id = $_GET["id"];
    $cls = $_GET["cls"];
    $dir = "gallery/$cls";
  echo "<p align=\"center\">";
  
  $owner = mysql_fetch_array(mysql_query("SELECT uid FROM gallery WHERE id='".$id."'"));
  if(mod(getuid_id($id))||getuid_id($id)==$owner[0])
  {
    $res = mysql_query("DELETE FROM gallery WHERE id='".$id."'");
$res2 = mysql_query("DELETE FROM comments WHERE pid='".$id."'");
$res3 = mysql_query("DELETE FROM rate WHERE pid='".$id."'");

    if($res||res2||res3 || unlink($dir))
        {
            echo "Photo Deleted From Gallery<br/>";
        }else{
          echo "Database Error!<br/>";
        }
  }else{
    echo "You can't delete this Photo";
  }

[$php_mysql$]

i tried printing the $dir and i get the results right print_r(gallery/user5639gin.gif);

 

but still it would not unlink($dir); ??

[$php_mysql$]

Any help here?

[$php_mysql$]

nevermind forgot to chmod to 777