my 1337 Convertor

J03

~~~~~~~~
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Location
Wales
Hey Guys, i just started working on a v. simple text to 1337 converter. What can i do to optimize this:

PHP:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Untitled Document</title>
<style type="text/css">
<!--
body,td,th {
	color: #FF0000;
	font-size: 18px;
	font-family: Arial, Helvetica, sans-serif;
}
body {
	background-color: #333333;
}
.style1 {font-size: 16px}
.style2 {font-size: 18px}
-->
</style></head>

<body>
<div>
<?php

if(!isset($_POST['inputstring'])){
?>
  <form id="form1" name="form1" method="post" action="">
  
    <p>Input String:<br />
      <textarea name="inputstring" cols="48" rows="7" id="inputstring"></textarea>
    </p>
    <p>Output Format:<br />
      <label>
      <select name="outputformat" id="outputformat">
        <option value="1337">Standard 1337</option>
      </select>
      </label> 
     </p>
    <p>
      <label>
      <input type="submit" name="Submit" value="submit" />
      </label>
    </p>
  </form>
  <p>
  <?php
}else{
$inputstring = $_POST['inputstring'];
$outputformat = $_POST['outputformat'];
if($outputformat == "1337"){
$outputstring = str_replace("a", "4", "$inputstring");
$outputstring = str_replace("A", "4", "$outputstring");
$outputstring = str_replace("e", "3", "$outputstring");
$outputstring = str_replace("E", "3", "$outputstring");
$outputstring = str_replace("t", "7", "$outputstring");
$outputstring = str_replace("T", "7", "$outputstring");
$outputstring = str_replace("l", "1", "$outputstring");
$outputstring = str_replace("L", "1", "$outputstring");
$outputstring = str_replace("o", "0", "$outputstring");
$outputstring = str_replace("O", "0", "$outputstring");
?>Conversion Summary:</p>
  <p class="style1">Input Text:<?php echo "$inputstring" ?> <br />
  Conversion Type: <?php echo "$outputformat"; ?><br />
  </p>
  <p class="style1"><span class="style2">Conversion Result</span>:</p>
  <p class="style1"><?php echo "$outputstring";?><br />
  <br /><hr />
    <form id="form1" name="form1" method="post" action="">
  
    <p>Input String:<br />
      <textarea name="inputstring" cols="48" rows="7" id="inputstring"></textarea>
    </p>
    <p>Output Format:<br />
      <label>
      <select name="outputformat" id="outputformat">
        <option value="1337">Standard 1337</option>
      </select>
      </label> 
     </p>
    <p>
      <label>
      <input type="submit" name="Submit" value="submit" />
      </label>
    </p>
  </form>
  <p>
    <?php
}}
?>
  </p>
</div>
</body>
</html>

code? There is an example @ http://j03.homedns.org:9999/str.php - That's is my home server (aka desktop pc) so it isnt on 24/7.
 
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