<?php
session_start();
if(!$_SESSION['Cipher']){
  echo "ERROR - NOT LOGGED IN";
  exit;
}

$key = $_SESSION['Cipher'];

if(!$_REQUEST['FileType']){ ?>
  <form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="POST">
    <label for="FileType">File Type</label>
    <input type="text" name="FileType" id="FileType" value="<?php echo $FileType; ?>">
    <br>
  </form>
<?php
die("");
}

function EncodeFiles($FileArray, $dir){
  global $key;
  foreach($FileArray as $SingleFile){
    $file = $SingleFile;
    $plain_text = file_get_contents($file);  //PROBLEM HERE there is no path (I need a changing folder name)
    /* Open module, and create IV */
    $td = mcrypt_module_open('des', '', 'ecb', '');
    $key = substr($key, 0, mcrypt_enc_get_key_size($td));
    $iv_size = mcrypt_enc_get_iv_size($td);
    $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);
    if (mcrypt_generic_init($td, $key, $iv) != -1) {
    $encrypted_data = mcrypt_generic($td, $plain_text);
    mcrypt_generic_deinit($td);
    $encrypted_file = @fopen($dir.$file.'.enc','w');
    $ok_encrypt = @fwrite($encrypted_file,$encrypted_data);
    if($ok_encrypt){
      echo ("File $file Encrypted and Saved as $file.enc <br />");
    } else {
      echo ("The write of file $file.enc failed!");
    }
    @fclose($encrypted_file);

    mcrypt_module_close($td);
    }
  }
}
function findFile($FileType, $dir) {
    $listing = array();
    if ($handle = opendir($dir)) {
        while (false !== ($file = readdir($handle))) {
            if (substr($file,-(strlen($FileType)+1)) == ".$FileType"){
                $listing[] = $file;
            }
        }
        closedir($handle);
    }
    return $listing;
}

$FileType = trim($_REQUEST['FileType']);
//Ensure the folders have a / at the end!
$dirs = array("Folder1/", "Folder2/", "orders/");
foreach ($dirs as $dir) {
    $listing = findFile($FileType, $dir);
    EncodeFiles($listing, $dir);
}