Permissions Testing

<?php
if(isset($_POST['btnsubmit'])) {
  $tmp_name = $_FILES["imagefile"]["tmp_name"];

  if(move_uploaded_file($tmp_name, "../path/to/file.png")) {
    $file = "../path/to/file.png";
    $permissions = 0777;

    if (!chmod($file,$permissions)) {
      die('Error with CHMOD' );
    }
  } else {
    die("There was an error uploading the file, please try again");
  }
}
?>
<form method="POST" enctype="multipart/form-data" id="imgsubmission" name="imgsubmission">
  <input type="file" id="imagefile" name="imagefile" size="50"/>
  <input type="submit" name="btnsubmit" value="Submit"/>
</form>