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This code ain't working. HELP

by Jawshh
6 replies
Hi,

I have a file upload php script but everytime I hit the upload button on my form, it says that the file I chose isn't allowed. I restricted some file types for security. Here's the code:

Code:
<?php
   
      $allowed_filetypes = array('.jpg','.gif','.bmp','.png','.jar');
      $max_filesize = 524288; 
      $upload_path = './files/'; 
 
   $filename = $_FILES['userfile']['name']; 
   $ext = substr($filename, strpos($filename,'.'), strlen($filename)-1); 
 
   
   if(!in_array($ext,$allowed_filetypes))
      die('The file you attempted to upload is not allowed.');
 
   
   if(filesize($_FILES['userfile']['tmp_name']) > $max_filesize)
      die('The file you attempted to upload is too large.');
 
   
   if(!is_writable($upload_path))
      die('You cannot upload to the specified directory, please CHMOD it to 777.');
 
   // Upload the file to your specified path.
   if(move_uploaded_file($_FILES['userfile']['tmp_name'],$upload_path . $filename))
         echo 'Your file upload was successful, view the file <a href="' . $upload_path . $filename . '" title="Your File">here</a>'; 
      else
         echo 'There was an error during the file upload.  Please try again.'; 
 
?>
Please let me know if you got it to work.

Thanks,
Josh
#code #working
  • Profile picture of the author PeerFly
    I tried that code and it worked. What's the HTML that you're using?
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  • Profile picture of the author mywebwork
    Hi Josh

    As a test you could try remarking out the line that tests the file extension and see if it works.

    That would at least narrow down the area you are having trouble with.

    Bill
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  • Profile picture of the author jamespitt
    I'd do this for debugging:

    make sure the code is getting the extension correctly...


    if(!in_array($ext,$allowed_filetypes))
    {
    die('The file you attempted to upload is not allowed - $ext files not allowed');
    }

    that should show you what's going on with the file extension. My guess is something is going wrong with the file upload on the web server. You might also want to take a look at the filename.
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  • Profile picture of the author Jawshh
    I think there is a problem with the filetypes check. After removing it, the uploads work well. Hmmm, I'll try to code again.

    Thanks guys
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    • Profile picture of the author Sharpscrew
      if(!is_writable())
      die('You cannot upload to the specified directory, please CHMOD it to 777.');
      did you check your permissions? They need to be set to 777
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  • Profile picture of the author saschakimmel
    Did the filename of the file you tried to upload contain a dot like picture.cool.jpg?
    In that case $ext would contain "cool.jpg" and it therefore wouldn't match.

    This should fix the problem:

    Replace this line:

    $ext = substr($filename, strpos($filename,'.'), strlen($filename)-1);

    with these lines:

    if (preg_match('/\.([^\.]+)$/', $filename, $m)) {
    $ext = $m[1];
    } else {
    $ext = '';
    }

    The problem is that your code searches for the first dot in the filename.
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