Warning: move_uploaded_file() failed to open stream

Question

I am trying to upload file on ftp.

here is my code

    $jname= "Accounts of Biotechnology Research";
    if (!is_dir('/Trade/upload/ '.$jname)) {

        mkdir('/Trade/upload/ '.$jname);   // line 63
    }
    move_uploaded_file($_FILES["submission_file"]["tmp_name"],    "/Trade/upload/$jname/" . $dup_name );    // line 67

Trade is a folder inside public_html folder.

When i am uploading a file it gives me a warning like,

Warning: mkdir() [function.mkdir]: No such file or directory in /home/my_username/public_html/Trade/upload.php on line 63

Warning: move_uploaded_file(/Trade/upload/Accounts of Biotechnology Research/76164762-sm.pdf) [function.move-uploaded-file]: failed to open stream: No such file or directory in /home/my_username/public_html/Trade/upload.php on line 67

Warning: move_uploaded_file() [function.move-uploaded-file]: Unable to move '/tmp/phphZXp0O' to '/Trade/upload/Accounts of Biotechnology Research/76164762-sm.pdf' in /home/my_username/public_html/Trade/upload.php on line 67 

Answer 1

First: You have a space here mkdir('/Trade/upload/ '.$jname);. Suppose you should have mkdir('/Trade/upload/'.$jname); (same for is_dir)

Second: Ensure that you can write into Trade/upload directory.

Third (and I suppose that is the real problem):

It looks like you are trying to upload into a directory with full path: /home/my_username/public_html/Trade/upload/, but your code will try to create a directory with full path: /Trade/upload/. You need to change

 if (!is_dir('/Trade/upload/ '.$jname)) {    
     mkdir('/Trade/upload/ '.$jname);   // line 63
 }

to

 if (!is_dir('upload/'.$jname)) {    
     mkdir('upload/'.$jname);   // line 63 (or maybe there should be Trade/upload, but suppose current working dir will be /home/my_username/public_html/Trade, so only upload/)
 }

Another option is to force mkdir to create directories recursively:

 mkdir('/Trade/upload/'.$jname, 0755, true);

But in that case, files will be uploaded into /Trade/upload/... instead of /home/my_username/public_html/Trade/upload/...

Answer 2

There are two things you should be aware of based on the error messages you received. I'm guessing /Trade isn't the root path on your machine since it's clear in the error that your actual path is /home/my_username/public_html/Trade/, so the first adjustment should be

$root_path = "/home/my_username/public_html/Trade/upload/";    

The second adjustment I'd suggest is that you avoid pathnames with space in them:

$jname= "Accounts of Biotechnology Research"; //could be changed to
$jname= "Accounts_of_Biotechnology_Research"; //$jname = str_replace(" ","-",$jname)    OR
$jname= "Accounts-of-Biotechnology-Research"; //$jname = str_replace(" ","-",$jname)    

Finally take note of the space character on the following lines, they affect you final result:

if (!is_dir('/Trade/upload/ '.$jname)) {   //AND
    mkdir('/Trade/upload/ '.$jname);
}

Note the [space] between upload/ '.$jname in both strings.