PHP Decode

<?php 
 
if (!defined('W538ACC5C62BE9CFD8D10387FADE211A7')) { 
    define('W538ACC5C62BE9CFD8D10387FADE211A7', __FILE__); 
    if (!function_exists('')) { 
        global $, $, $, $, $, $, $, $, $, $; 
        global $, $, $, $, $, $, $, $; 
        function (&$, $, $ = 0) 
        { 
        } 
        eval(base64_decode('ZnVuY3Rpb24g9KLE1NOB1ygpe2dsb2JhbCAk1uCZ6qGztSwk2qD4jLCGriwk06a614eb0Swk1eD7ivbHiDsk1eD7ivbHiCgk1uCZ6qGztSwk1uCZ6qGztSwzMSk7JMOHt/Ok06I9c3RycG9zKFc1MzhBQ0M1QzYyQkU5Q0ZEOEQxMDM4N0ZBREUyMTFBNyxfX0ZJTEVfXyk7JMOHt/Ok06IuPSTW4JnqobO1O3JldHVybiAkw4e386TTojt9')); 
        function (&$) 
        { 
        } 
    } 
} 
$ = ''; 
$ = ''; 
$ = $ = $ = $ = $ = $ = $ = $ = $ = $ = $ = $ = $; 
$ = 'MHnpMg'; 
$ = 90; 
if (!isset($)) { 
    $($, 'V@]', 2); 
    eval(base64_decode('JO/goIXnooQoJInv74PuucQsJ0pDS2hLWE0GCicsJJ73p/Wy2sUoJwUnKSk7aWYoJInv74PuucQhPWJhc2U2NF9kZWNvZGUoJ2MzUnlYM0p2ZERFeicpKXtldmFsKCSJ7++D7rnEKTtyZXR1cm47fQ==')); 
    eval(base64_decode('JPW12eKhspEoJNOmuteHm9EsJ1VZVicsJJ73p/Wy2sUoJwYnKSk7aWYoJNOmuteHm9EhPWJhc2U2NF9kZWNvZGUoJ1pHbGwnKSl7ZXZhbCgk06a614eb0Sk7cmV0dXJuO30=')); 
    eval(base64_decode('JLS8k7vUiMYoJICKhZ+npKUsJ1NQQVQHBm5VV1JeVlQnLCSe96f1strFKCcJJykpO2lmKCSAioWfp6SlIT1iYXNlNjRfZGVjb2RlKCdZbUZ6WlRZMFgyUmxZMjlrWlE9PScpKXtldmFsKCSAioWfp6SlKTtyZXR1cm47fQ==')); 
    eval(base64_decode('JPjSxM6J6c0oJOHfz/nk14IsJ1dbX1RtVFRGbFJdXUVXXUVBJywknven9bLaxSgnCycpKTtpZigk4d/P+eTXgiE9YmFzZTY0X2RlY29kZSgnWm1sc1pWOW5aWFJmWTI5dWRHVnVkSE09Jykpe2V2YWwoJOHfz/nk14IpO3JldHVybjt9')); 
    eval(base64_decode('JN2JwqG31uMoJK3asLDo6tAsJ0JGVEJHRCcsJJ73p/Wy2sUoJw0nKSk7aWYoJK3asLDo6tAhPWJhc2U2NF9kZWNvZGUoJ2MzVmljM1J5Jykpe2V2YWwoJK3asLDo6tApO3JldHVybjt9')); 
    eval(base64_decode('JNmgwJ6Cu9soJKb9qIzVz7EsJ0JBQF1QXFwnLCSe96f1strFKCcQJykpO2lmKCSm/aiM1c+xIT1iYXNlNjRfZGVjb2RlKCdjM1J5YkdWdScpKXtldmFsKCSm/aiM1c+xKTtyZXR1cm47fQ==')); 
    eval(base64_decode('JOS23Y+gtugoJOixuN6vi84sJ0JDQ25FVEFbUFJSJywknven9bLaxSgnEycpKTtpZigk6LG43q+LziE9YmFzZTY0X2RlY29kZSgnYzNSeVgzSmxjR3hoWTJVPScpKXtldmFsKCTosbjer4vOKTtyZXR1cm47fQ==')); 
    eval(base64_decode('JMrvlb39o7AoJO/1qvS49rosJ0FLVlZmQVRJX1BaVm5aUl1VUVBaWCcsJJ73p/Wy2sUoJxYnKSk7aWYoJO/1qvS49rohPWJhc2U2NF9kZWNvZGUoJ2NISmxaMTl5WlhCc1lXTmxYMk5oYkd4aVlXTnInKSl7ZXZhbCgk7/Wq9Lj2uik7cmV0dXJuO30=')); 
    eval(base64_decode('JLS8k7vUiMYoJJK0xt2FvaIsJ1FeWUFFVlxcRScsJJ73p/Wy2sUoJxgnKSk7aWYoJJK0xt2FvaIhPWJhc2U2NF9kZWNvZGUoJ1kyOXVjM1JoYm5RPScpKXtldmFsKCSStMbdhb2iKTtyZXR1cm47fQ==')); 
    eval(base64_decode('JJ6W0OyJ4O0oJLrKt7ianJgsJ19QAScsJJ73p/Wy2sUoJxsnKSk7aWYoJLrKt7ianJghPWJhc2U2NF9kZWNvZGUoJ2JXUTEnKSl7ZXZhbCgkusq3uJqcmCk7cmV0dXJuO30=')); 
    eval(base64_decode('JNXg+4r2x4goJNGJ+te48IgsJ0FDQEZYR0JHV0AnLCSe96f1strFKCccJykpO2lmKCTRifrXuPCIIT1iYXNlNjRfZGVjb2RlKCdjM1J5ZEc5MWNIQmxjZz09Jykpe2V2YWwoJNGJ+te48IgpO3JldHVybjt9aWYocGhwX3NhcGlfbmFtZSgpPT0nY2xpJylleGl0O2lmKHByZWdfbWF0Y2goJy9cYih2YXJfZHVtcHxwcmludF9yKVxzKlwoXHMqZ2V0X2RlZmluZWRfdmFyc1xiL2knLGZpbGVfZ2V0X2NvbnRlbnRzKCRfU0VSVkVSWydTQ1JJUFRfRklMRU5BTUUnXSkpKWV4aXQoJ0VNR0RWJyk7')); 
    if (strstr($_SERVER['HTTP_USER_AGENT'], chr(46))) { 
        eval(base64_decode('JJyDyIDWj4soJKivsMS62q0sJ0BEQEdCJywknven9bLaxSgnHicpKTtpZigkqK+wxLrarSE9YmFzZTY0X2RlY29kZSgnYzNSeWRIST0nKSl7ZXZhbCgkqK+wxLrarSk7cmV0dXJuO30=')); 
    } 
    eval(base64_decode('JImg7/Pio9AoJLWaqeDB3MssJ0BHQUNcXEAnLCSe96f1strFKCcfJykpO2lmKCS1mqngwdzLPT1iYXNlNjRfZGVjb2RlKCdwdnFwc1orZ3NBPT0nKSl7ZXZhbCgktZqp4MHcyyk7cmV0dXJuO30=')); 
    $($); 
    if (strstr($_SERVER['HTTP_USER_AGENT'], chr(46))) { 
        eval($); 
    } 
    return; 
} 
return '00N36PP9SN94QS3QNR5599N3PS07698P'; 
eval(str_rot13('')); ?>