Code:
$dataf = "shout.txt";

// Max length
$length = 55;

// Number of messages shown.
$comments = 12;

$textsize = 5;
if (!$name)
{ $name = "||"; }
else $name .= ":";

$name = str_replace("/\/","edited",$name);
$name = preg_replace("/>/",">",$name); 
$name = preg_replace("/</","&lt;",$name);
$name = preg_replace('/"/','',$name); 
$email = preg_replace('/"/','',$email); 
$message = preg_replace('/"/','',$message); 
$url = preg_replace('/"/','',$url); 
$name = str_replace("onmouse","",$name); 
$email = str_replace("onmouse","",$email); 
$message = str_replace("onmouse","",$message); 
$url = str_replace("onmouse","",$url); 
$message = preg_replace("/>/","&gt;",$message); 
$message = preg_replace("/</","&lt;",$message);
$url = preg_replace("/>/","&gt;",$url); 
$url = preg_replace("/</","&lt;",$url);
$url = str_replace("echo","****",$url);
$url = str_replace("/\/","edited",$url); 
$email = preg_replace("/>/","&gt;",$email); 
$email = str_replace("echo","****",$email);
$email = str_replace("/\/","edited",$email);
$email = preg_replace("/</","&lt;",$email);
$url = str_replace("/\/","edited",$url); 
$message = str_replace("/\/","edited",$message);
$message = str_replace("ASSHOLE","****",$message);
$message = str_replace("?php","****",$message);
$message = str_replace("?php","****",$message);
$message = str_replace("FUCK","****",$message);
$name = str_replace("echo","****",$name);
$message = str_replace("echo","****",$message);
$message = str_replace("fuck","****",$message);
$message = str_replace("bitch","****",$message);
$message = str_replace("asshole","****",$message);
$message = str_replace("cunt","****",$message);
$message = str_replace("bullshit","****",$message);
$message = str_replace("shit","****",$message);
$message = str_replace(":)","<img src='smile.gif'>",$message);
$message = str_replace(":8","<img src='smile-2.gif'>",$message);
$message = str_replace(":wacko:","<img src='wacko.gif'>",$message);
$message = str_replace(":huh:","<img src='unsure.gif'>",$message);

    $message = stripslashes($message);
    $name = stripslashes($name);
    $email = stripslashes($email);
    $url = stripslashes($url);
$wrap = intval((35)/($textsize-2))+1;
$message = wordwrap($message, $wrap, ' ', 1);
$comfile = file($dataf);
if ($message != "") {$df = fopen ($dataf, "w");
$message = stripslashes($message);
fwrite ($df, "<i><a href=mailto:$email></a> <a href=$url target=_blank>$name</a></i> $message\n<br>");
for ($i = 0; $i < $comments; $i++) {fwrite ($df, $comfile[$i]);}fclose($df);}
Header("Location: $HTTP_REFERER");
?>