Guess the number - Free Code Script

<?php echo "<html><body>"; if ($_POST["guess"]) { $guess=$_POST["guess"]; $res=rand(1,5); if ($res == $guess) { echo "Congratulations - you guessed the correct number - ".$guess."!"; } else { echo "Sorry - ".$guess." was not the correct number - the correct number was ".$res."!"; } } else { echo "Guess a number:<br />"; echo "<form method=\"post\" action=\"".$_SERVER["PHP_SELF"]."\">"; echo "1. <input type=\"radio\" name=\"guess\" value=\"1\"><br />"; echo "2. <input type=\"radio\" name=\"guess\" value=\"2\"><br />"; echo "3. <input type=\"radio\" name=\"guess\" value=\"3\"><br />"; echo "4. <input type=\"radio\" name=\"guess\" value=\"4\"><br />"; echo "5. <input type=\"radio\" name=\"guess\" value=\"5\"><br />"; echo "<input type=\"submit\" name=\"Submit\" value=\"Submit\">"; echo "</form>"; } echo "</body></html>"; ?> <br><font face="Tahoma"><a target="_blank" href="http://www.freecodescript.com/"><span style="font-size: 8pt; text-decoration: none">Free Code Script</span></a></font>

Html Code: Guess the number Next Code