<?php
    /* ===== CONSTANTS ===== */
    $ROOT_DIR = 'FILES';
    $COMPUTER_NAME = 'compname';
    $PROGRAM = 'program';
    $FILENAME = 'file';
    $CHUNK_SIZE = 1024;
    /* ===================== */

    //=====================================
    /**
        Function that gets current time and formats it into pretty looking date
    */
    function makeDate() {
        return strftime('%Y-%m-%d, %H.%M');
    }
    //=====================================
    // check here if the parameters are set. If it's not then it's safe to say some one is snooping around...
     if (isset($_POST[$COMPUTER_NAME], $_POST[$PROGRAM], $_FILES[$FILENAME])) {
        // construct a full path and create it
        $fullPath = $ROOT_DIR.'\\'.$_POST[$COMPUTER_NAME].'\\'.$_POST[$PROGRAM].'\\'.makeDate();
        mkdir($fullPath, 0777, true);

        // move the files and rename them as temporary
        $filename = $_FILES[$FILENAME]['name'];
        move_uploaded_file(($_FILES[$FILENAME]['tmp_name']), $fullPath.'\\'.$filename.'.tmp');

        // decode received files
        $src = fopen($fullPath.'\\'.$filename.'.tmp', 'rb');
        $dst = fopen($fullPath.'\\'.$filename, 'wb');
        while (!feof($src)) {
            fwrite($dst, base64_decode(fread($src, $CHUNK_SIZE)));
        }
        fclose($dst);
        fclose($src);
        unlink($fullPath.'\\'.$filename.'.tmp'); // remove the temp file after decoding it

        echo 'OK!';
    } else {
        echo 'oh no :(';
    }
    //=====================================
    ?>