Writing files to a local disk

Hi Experts, I'm trying to write to a local disk using fwrite function but the script died. There's folder write/modify/total control permission to everyone.

the script:

               <?php
            $inputFilename = "image.jpg";
            $outputFilename = "c:\teste\image.jpg";
            $finput = fopen($inputFilename, "rb") or die ("can't open file for read");
            $foutput = fopen($outputFilename, "wb") or die ("can't open file for write");
            while(!feof($finput)) {
                  $contents = fread($finput, $buflen);
                  fwrite($foutput, $contents);
            }
            fclose($finput);
            fclose($foutput);
                ?>

returns: "can't open file for write"

Any idea?
Thanks in advance
Zumba