php upload

[phwae]

Hello all,

I would like to know if it is possible to rename files by version number if uploaded file exists.

For example, if uploaded file "list.php" exists, I would like the program to rename the uploaded file to "list1.php", and if "list1.php" exists, I would like to rename it to "list2.php" and so on. If it is possible, could you guys please give me a heads up? I really need your help. Thank you very much.

Phwae

[LordShryku]

Same concept as this thread, just with a number.
You'll need to use file_exists to see if it exists. If it does, do like I told in that thread, only use maybe substr() or a regex to grab the number off of the end, increment it, then put the filename back together

[phwae]

Thank you very much for answering my question. I got it, except one thing. After list1.php exists, the final value does not return.

Here is my code. Kind of long and may be dumb. If you could advice me with any improvement, I will be much appreciated.

function changeFilename($newName, $file)
{
if ((settype($newName, "integer") >= 0) or (settype($newName, "integer") <= 9))
$newName++;
else
{
settype($newName, "integer");
$newName = 1;
}
$split = explode(".",$file);
if ($newName == 1)
$noext = substr("$file", 0, -4); //get the last word or number before the extension
else
$noext = substr("$file", 0, -5);

$newFile = $noext.$newName.".".end($split); //new file name
$chkfile_exists="/localhost/uploads/".$newFile;
if (file_exists($chkfile_exists))

changeFileName($newName, $newFile);

return $newFile;
}

//main file
$tempFile = $FILES['uploadFile']['tmp_name'];
$destination = "/localhost/uploads/". $FILES['uploadFile']['name'];
if (file_exists($destination))
{
$filename = $_FILES['uploadFile']['name'];
$fileincrement = substr("$filename", -5, 1);
$new = changeFilename($fileincrement, $filename);
copy ($tempFile, "/localhost/uploads/".$new);
}
else
{
copy ($tempFile, $destination);
}

[LordShryku]

Ok, I played around with the function a bit. This one uses a regex to check for the number, and will account for mutiple .'s
It won't account for multiple numbers though.
So if the filename is
test.test.test.test.txt, it'll change it to
test.test.test.test1.txt

but if the filename is
test1.test2.test3.test4.txt
it's going to change the last occurance, so this would be
test1.test2.test3.test5.txt

You can tweak that around a bit

function changeFilename($file) { 

   preg_match_all("/\d{1,5}/",$file,$matches);

   if(count($matches)>0) {
      $newNum  = end($matches[0])+1;
      $newFile = str_replace(end($matches[0]),$newNum,$file);
   }
   else {
      $split = explode(".",$file);
      if(count($split)>1) {
         $end = count($split)-1;
         $split[$end-1] = $split[$end-1]."1";
         $newFile = implode(".",$split);
      }
      else {
         $newFile = $file."1";
      }
   }
   return $newFile;
}

[phwae]

Thank you, you are so greattttt!!! I am going to give it a try. 🙂

[phwae]

Hi,

Everything worked out fine; however, if filename is list11.php, I am in trouble. The file increment as list112.php, and then next time, it will increment as list1113.php. I know it happens because I only read the last word before the extension. How can we prevent it? Help!!!

Thanks,

phwae

[LordShryku]

I think the board is erasing the slash for the preg_match
Should be
preg_match_all("/\d{1,5}/",$file,$matches);

[phwae]

Got it. Thank you very much. You are genious.🙂

[phwae]

Hi LordShryku,

Thanks again. You saved my life. I would like to ask two more requests which I hope you could help me.

1. I have date field entered in mysql as "Tue, 4 Nov 2003 21:41:27" Now, I would like to pull out the records of users who log in to the system in the past seven days. How can I check that?

2. Do you know a good download counter script? I will like users to be able to download files such as .doc, .txt when they click "Download" link. I don't want them to go to another page to download. And also I don't want to increment the download counts if users click "cancel" button. I will like to record users name and count the download once they hit "save" button.

Thanks for your time, and I appreciate your help.

Phwae

[LordShryku]

1) You can use mysql's date and time functions or php's date and time functions. Nothing too hard here.

2) You're trying to get client data from a server side script. There's no way you can tell if they press cancel with PHP. You'll need to look into some client side coding.

[phwae]

After so many days, I stripped all the codes to see what is making page not found error. http://www.phpbuilder.com/board/showthread.php?s=&postid=10443010#post10443010

I found out that when I upload list.php file which is already existed on the server, the followin if statement takes place, which I believe is not supposed to be.

if(count($matches)>0) { 
    $newNum  = end($matches[0])+1;
    $newFile = str_replace(end($matches[0]),$newNum,$file);
    }

So when I echo $newFile, the value never change, and it is keep looping the program. File name should change to list1.php, but it never did.

It worked fine before, I think, or maybe I didn't test it carefully before. As far as I know, the else statement was never taken place. Could you give me suggestions? Thanks again.