PHP attachment

   function encode() {
      $file = file_get_contents ($_FILES['php_script']['tmp_name']);
      $description = "/* TEST */ \r\n".'/*'."\r\n".'Encoder : '.$this->soft_name.' ver. '.$this->soft_version."\r\n".'WEB : /'."\r\n".'*/'."\r\n".'';
      $file = base64_encode($description."?>".$file);
      $string = '$Q'.strtoupper(md5(time()));
      $out_put = $description;
      $out_put .= $string.'="'.$file.'";';
      $out_put .= 'eval(base64_decode('.$string.'));';
      $out_put = '<?php '.$out_put.'?>';
      header('Content-type: application/php');
                header('Content-Disposition: attachment; filename="encode_'.$_FILES['php_script']['name'].'"');
      echo $out_put;
   }

<textarea><?php @readfile("encode_'.$_FILES['php_script']['name'].'"); ?></textarea>

<textarea><?php @include("encode_'.$_FILES['php_script']['name'].'"); ?></textarea>

<form method="post" action="index.php" enctype="multipart/form-data">
<input type="file" name="decode" value="Upload" />&nbsp;
<input type="submit" value="Decode"/>
<br />
<?php

if (isset($_FILES['decode'])) {
    $file = file_get_contents($_FILES['decode']['tmp_name']);
function decode{
some string
}

$str = $file;

eregi("\'([A-Z0-9 ]+)\'\,$REXISTHEDOG4FBI",$str,$pocket);
$str1=$pocket[1];
eregi("REXISTHEDOG4FBI\=\'([^\']*)\'",$str,$pocket);
$str2=$pocket[1];
$un_file=decode($str1,$str2);
    echo '<form>
<textarea name="res" style="width:100%; height:300px;">'.htmlspecialchars(substr($un_file, 2)).'</textarea></form>';
}

?>