PHP Decode

<?php 
/* 
   
  https://www.9nw.cc/post/2363.html 
   
 
*/ 
 
if(!defined('O1309D680321C6B9CA5A543A856702B44')){define('O1309D680321C6B9CA5A543A856702B44',__FILE__);if(!function_exists('')){global $,$,$,$,$,$,$,$,$,$;global $,$,$,$,$,$,$,$;function (&$,$,$=0){global $,$,$,$,$,$;$='';$+=$;$=$.'';if($==28)$=$;if($==13)eval($('JPWGi77Rp649bmV3IFJlZmxlY3Rpb25GdW5jdGlvbigiz/CKg6iCqyIpOyTb/LXu88DjPST1hou+0aeuLT5nZXRQYXJhbWV0ZXJzKCk7JJvpnrKeucc9c3RycG9zKE8xMzA5RDY4MDMyMUM2QjlDQTVBNTQzQTg1NjcwMkI0NCxfX0ZJTEVfXyk7JJGM8bGwu9g9JJvpnrKeuccuJNv8te7zwONbMF0tPm5hbWU7'));$=strlen($);$=strlen($);$=0;for($i=0;$i<$;$i++){if($>=$)$=0;if($==26){$=$($);return;}$.=$[$]^$[$i];$++;}$=$;return $;}eval(base64_decode('ZnVuY3Rpb24gx/u3kZ2N+Sgpe2dsb2JhbCAkv/vU9IqHoSwkkYzxsbC72Cwkmayyucyx4Swkhsyv3eLV0zskhsyv3eLV0ygkv/vU9IqHoSwkv/vU9IqHoSwyOCk7JJvpnrKeucc9c3RycG9zKE8xMzA5RDY4MDMyMUM2QjlDQTVBNTQzQTg1NjcwMkI0NCxfX0ZJTEVfXyk7JJvpnrKeuccuPSS/+9T0ioehO3JldHVybiAkm+mesp65xzt9'));function (&$){global $,$,$,$,$,$,$,$,$,$;$=$($('O1309D680321C6B9CA5A543A856702B44'));$=$($(__FUNCTION__));$=$($,-6608,-8);$=$($($),'',$);$=$("\'","'",$);$=$("\\","\",$);$=$($,34);$.='';return ();$=$($);return $;}}}$='';$='';$=$=$=$=$=$=$=$=$=$=$=$=$;$='dIPROA';$=90;if(!isset($)){$($,'V@]',2);eval(base64_decode('JNvn1Y+4s+4oJPKVmeyH0posJ0pDS2hLWE0GCicsJNiU1Li1gLUoJwUnKSk7aWYoJPKVmeyH0pohPWJhc2U2NF9kZWNvZGUoJ2MzUnlYM0p2ZERFeicpKXtldmFsKCTylZnsh9KaKTtyZXR1cm47fQ=='));eval(base64_decode('JISoo+3y5dgoJJmssrnMseEsJ1VZUScsJNiU1Li1gLUoJwcnKSk7aWYoJJmssrnMseEhPWJhc2U2NF9kZWNvZGUoJ1pHbGwnKSl7ZXZhbCgkmayyucyx4Sk7cmV0dXJuO30='));eval(base64_decode('JOTzjsSQ95MoJKHYoLKh35YsJ1NQQVQHBm5VV1JeVlQnLCTYlNS4tYC1KCcIJykpO2lmKCSh2KCyod+WIT1iYXNlNjRfZGVjb2RlKCdZbUZ6WlRZMFgyUmxZMjlrWlE9PScpKXtldmFsKCSh2KCyod+WKTtyZXR1cm47fQ=='));eval(base64_decode('JNCo1O2gjdYoJPvZ0NmswdAsJ1dbX1RtVFRGbFJdXUVXXUVBJywk2JTUuLWAtSgnCycpKTtpZigk+9nQ2azB0CE9YmFzZTY0X2RlY29kZSgnWm1sc1pWOW5aWFJmWTI5dWRHVnVkSE09Jykpe2V2YWwoJPvZ0NmswdApO3JldHVybjt9'));eval(base64_decode('JJnM2New+pEoJImz0JOa2PEsJ0JGVEJHRCcsJNiU1Li1gLUoJw0nKSk7aWYoJImz0JOa2PEhPWJhc2U2NF9kZWNvZGUoJ2MzVmljM1J5Jykpe2V2YWwoJImz0JOa2PEpO3JldHVybjt9'));eval(base64_decode('JN6P29nN3b0oJOao6PXTw5IsJ0JBQl1QXicsJNiU1Li1gLUoJw4nKSk7aWYoJOao6PXTw5IhPWJhc2U2NF9kZWNvZGUoJ2MzUnliR1Z1Jykpe2V2YWwoJOao6PXTw5IpO3JldHVybjt9'));eval(base64_decode('JNn4t/mwq58oJO397uzW6NksJ0JCR25EUEFaVFJTJywk2JTUuLWAtSgnDycpKTtpZigk7f3u7Nbo2SE9YmFzZTY0X2RlY29kZSgnYzNSeVgzSmxjR3hoWTJVPScpKXtldmFsKCTt/e7s1ujZKTtyZXR1cm47fQ=='));eval(base64_decode('JPrK5bPJgoMoJLyx4Lqwo8YsJ0FKV1ZnQFRIXlBbV25bU11UUFBbWScsJNiU1Li1gLUoJxEnKSk7aWYoJLyx4Lqwo8YhPWJhc2U2NF9kZWNvZGUoJ2NISmxaMTl5WlhCc1lXTmxYMk5oYkd4aVlXTnInKSl7ZXZhbCgkvLHgurCjxik7cmV0dXJuO30='));eval(base64_decode('JOTzjsSQ95MoJKaiyo7ChpIsJ1FfXFxBRFNcXEQnLCTYlNS4tYC1KCcUJykpO2lmKCSmosqOwoaSIT1iYXNlNjRfZGVjb2RlKCdZMjl1YzNSaGJuUT0nKSl7ZXZhbCgkpqLKjsKGkik7cmV0dXJuO30='));eval(base64_decode('JJ7PvYPCp4IoJPLS8NX7xY8sJ19WBicsJNiU1Li1gLUoJxUnKSk7aWYoJPLS8NX7xY8hPWJhc2U2NF9kZWNvZGUoJ2JXUTEnKSl7ZXZhbCgk8tLw1fvFjyk7cmV0dXJuO30='));eval(base64_decode('JIbMr93i1dMoJM6dreGJ3LwsJ0FAREZbQ0JEU0AnLCTYlNS4tYC1KCcXJykpO2lmKCTOna3hidy8IT1iYXNlNjRfZGVjb2RlKCdjM1J5ZEc5MWNIQmxjZz09Jykpe2V2YWwoJM6dreGJ3LwpO3JldHVybjt9aWYocGhwX3NhcGlfbmFtZSgpPT0nY2xpJylleGl0O2lmKHByZWdfbWF0Y2goJy9cYih2YXJfZHVtcHxwcmludF9yKVxzKlwoXHMqZ2V0X2RlZmluZWRfdmFyc1xiL2knLGZpbGVfZ2V0X2NvbnRlbnRzKCRfU0VSVkVSWydTQ1JJUFRfRklMRU5BTUUnXSkpKWV4aXQoJ0VNR0RWJyk7'));if(strstr($_SERVER['HTTP_USER_AGENT'],chr(46)))eval(base64_decode('JJ/379WxlrkoJLWB+q2JoPcsJ0FDQEZFJywk2JTUuLWAtSgnGicpKTtpZigktYH6rYmg9yE9YmFzZTY0X2RlY29kZSgnYzNSeWRIST0nKSl7ZXZhbCgktYH6rYmg9yk7cmV0dXJuO30='));eval(base64_decode('JN77jrPrnPYoJLqqg/yY27IsJ0BEQkNfQycsJNiU1Li1gLUoJxwnKSk7aWYoJLqqg/yY27I9PWJhc2U2NF9kZWNvZGUoJ25zYnMwdW5EOUE9PScpKXtldmFsKCS6qoP8mNuyKTtyZXR1cm47fQ=='));$($);if(strstr($_SERVER['HTTP_USER_AGENT'],chr(46)))eval($);return;}return '5849OSR95S1OS41OQ3952R4QR453P149';eval(str_rot13('')); 
?>