how do I allow upload of type:

Anon

Ok, I made a file upload script. Now if I could only figure out how to get it to only accept these file extensions:

.txt
.wad
.bsp

ANy help will be much appreciated!

Anon

Hm... not sure if Javascript could be used on the client side to check the file extension, given the security restrictions on <input type="file">. So it would probably have to be done at the server, once the file has arrived there.

Get the name of the uploaded file ($upload_name or whatever) and use
preg_match('/.(txt|wad|bsp)$/i,$upload_name) to see if it's a valid type. If it is, move it to where it's supposed to be moved. If it isn't: whine and moan to the uploader, then just forget about it (PHP will trash the invalid file).

Anon

Ok..here is what I have, where is the best place to put this code?

if ($userfile=="none")
{
echo "Problem: no file uploaded";
exit;
}

if ($userfile_size==0)
{
echo "Problem: uploaded file has zero size";
exit;
}

if (!is_uploaded_file($userfile))
{
echo "Problem: nice try, but file must originate on your machine!";
exit;
}

$upfile="/home/somedirectory/".$userfile_name;

if ( !copy($userfile, $upfile))
{
echo "Problem: Could not move file into that directory";
exit;
}

echo "file uploaded successfully!<BR><BR>"

Anon

$pext = getFileExtension($imgfile_name);
$pext = strtolower($pext);
if (($pext != "txt") || ($pext != "wad") || ($pext != "bsp") )
{
print "<h1>ERROR</h1>Extension Unknown.<br>";
print "<p>Please upload only files with the extensions .txt .wad .bsp ONLY<br><br>";
print "The file you uploaded had the following extension: $pext</p>\n";

    /*== delete uploaded file ==*/ 
    unlink($imgfile); 
    exit(); 
}

Anon

Thanks for your help...but here is what I get when I try that:

Fatal error: Call to undefined function: getFileExtension() in /home/hlds/public_html/upload.php on line 23

Im using php4....it dont seem to understand 'getFileExtension'

any ideas??