Change name of an uploaded file

[xcandiottix]

If someone uploads a file to my server, currently the file saves under whatever name they assign the file. I figure this could be a bad practice though, so how can I change the file name? Here's my current script:

 

if ((($_FILES["file"]["type"] == "image/gif")
|| ($_FILES["file"]["type"] == "image/jpeg")
|| ($_FILES["file"]["type"] == "image/pjpeg"))
&& ($_FILES["file"]["size"] < 200000))
  {
  if ($_FILES["file"]["error"] > 0)
    {
    echo "Return Code: " . $_FILES["file"]["error"] . "<br />";
    }
  else
    {
    echo "Upload: " . $_FILES["file"]["name"] . "<br />";
    echo "Type: " . $_FILES["file"]["type"] . "<br />";
    echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb<br />";
    echo "Temp file: " . $_FILES["file"]["tmp_name"] . "<br />";

    if (file_exists("upload/" . $_FILES["file"]["name"]))
      {
      echo $_FILES["file"]["name"] . " already exists. ";
      }
    else
      {
      move_uploaded_file($_FILES["file"]["tmp_name"],
      "upload/" . $_FILES["file"]["name"]);
      echo "Stored in: " . "upload/" . $_FILES["file"]["name"];

 

I'd like to maybe make it incremental if possible... or possibly just a totally random string.

[andrewgauger]

http://www.php.net/manual/en/function.rename.php

 

bool rename ( string $oldname , string $newname [, resource $context ] )

 

I would also put a mysql table that handles the old file name and new file names, that way you will be able to locate the files (remember to rename the file to something that no one will use such as "sitename_MMDDYYYY_INCREMENTAL.jpg"  even better would be a properly formatted timestamp.