PHP : Decryption - stripslashes(gzinflate(base64_decode())

<?php
//name  : stripslashes(gzinflate(base64_decode DECRYPTER

echo '<p align="center">eval(stripslashes(gzinflate(base64_decode DECRYPTER<br><hr>

<p align="center">coded by dika_xb ||
hacker-newbie.org  || hujan.asap@gmail.com<br>
<hr>
<p align="center"> how to use ? <p>
this script :<br> < ?php<br>
eval(stripslashes(gzinflate(base64_decode("<b>SCRIPT HERE</b>"))));
<BR>?>  <br>

put <b>SCRIPT HERE</b> to text box and decrypt <br>';
   set_time_limit(100);    
 
  $isi = $_POST['data'];
        if(isset($isi)){
  




  $isi = str_replace('?>',"",$isi);
$isi = str_replace('<?php eval(("',"",$isi);

$isi = str_replace('"',"",$isi);
$isi = str_replace(')))); ?><?',"",$isi);

$isi = str_replace(')',"",$isi);
$isi = str_replace(';',"",$isi);;
    

  
     

   

   function dec($isi)
   {
         $isi = stripslashes(gzinflate(base64_decode($isi)));

    $isi = str_replace('?><?php eval(stripslashes(gzinflate(base64_decode("',"",$isi);
$isi = str_replace('")))); ?><?',"",$isi);

$cari = ';';
$find = strpos($isi,$cari);

if($find === false) {dec($isi);}
else 
{
    $isi = str_replace("</textarea>","</textarea>",$isi);
   echo "<form action='' method='post'> <textarea rows='8' cols='150' name=data>$isi </textarea><br><br><input type='submit' value='decrtipt'>";
     
}




        
return($isi);
   }
   $i=0;

   $isi = dec($isi);
 


        }
        else
        {
            echo '<form action="" method="post"> 
<textarea name="data" rows="8" cols="150"></textarea> <br>
<input type="submit" value="decrtipt">';
        }
        
     
?>