Deleting a file from folder using PHP

Question

I am trying to implement a way for user to delete files. I am using the code below but it doesn't delete the files. This file is under the root and i checked and made sure that it has permissions to allow users to do what they want, so i am thinking its the script:

   $sql = "select `File` from `documents` where `user_id` = '$userid'
   and `doid` = '$doid'";
  $query = mysql_query($sql) or die ("Error: ".mysql_error());

   while ($row = mysql_fetch_array($query)){

$fn = $row['File'];

  }
   mysql_free_result($query);

    unlink(/userstash/$fn);

Answer 1

unlink($file) is the correct function to delete a file.

Check if the $fn is filled. And try to use.

unlink('/userstash/' . $fn);