fwrite

[jpr]

Hello,

I am creating a file storage system for a web application. What I am doing is storing the name, size, and type in a database, and storing the data itself in the root directory tree. I do not keep the file extensions on these files in the tree, they are given a random 12-letter name (2l3j4234j343). However, after I collect the data from the form and write it, it is not an exact copy. The file becomes larger and slightly different from the original.

function uploadFile($formData) {
  $data = addslashes(fread(fopen($formData, "r"), filesize($formData)));
  $this->writeBinData("000000000000",$data);
}

function writeBinData($filehash,$data) {
  $handle = fopen("../filebin/" . $filehash,"a");
  fwrite($handle, $data);
}

[ysu]

if you're working from uploaded files and they are binary, the addslashes is not a good idea. Best to leave them untouched.
But either way, addslashes will change the file content for sure.

Apart from that I'd put in some error handling. 🙂

[jpr]

That was the problem, I wasnt stripping the slashes later on. Thank you.