Untitled

<?php

echo "<h1>Register</h1>";

$submit = strip_tags($_POST['submit']);

$fullname = strip_tags($_POST['fullname']);
$username = strip_tags($_POST['username']);

$password =strip_tags($_POST['password']);
$repeatpassword = strip_tags($_POST['repeatpassword']);

$date = ("Y-m-d");

if ($submit) {

    // Check to see if they are in database already
    if($fullname&&$username&&$$$password&&$repeatpassword) {

        $password = md5($password);
        $repeatpassword = md5($repeatpassword);

        if ($password==$repeatpassword) {

            // check char lenght of username and fullname
            if (strlen($username)>25||strlen($fullname)>25)
                {
                    echo "Full name or Username is too long!";
                }
                else
                {
                    // check lenght of password
                    if (strlen($password)>25||strlen($password)<8)
                    {
                        echo "Password <strong>Must</strong> be between 8 and 25 characters";

                    }
                    else {
                    // Register Users

                    }

                }
        }
        else
            echo "Your password don't match!";
    }
    else
        echo "Please fill in <strong>all</strong> fields.";
}

?>

<!DOCTYPE html>
<html lang="">
<head>
  <meta charset="utf-8">
    <title></title>
    <meta name="description" content="" />
    <meta name="keywords" content="" />
    <meta name="robots" content="" />
</head>
<body>

    <form action='register.php' method='post'>
        <label>Full Name</label><input type='text' name='fullname'>
        <label>Choose Username</label><input type='text' name='username'>
        <label>Choose Password</label><input type='password' name='password'>
        <label>Repeat Password</label><input type='password' name='repeatpassword'>
        <input type='submit' name='submit' value='Register'>
    </form>

</body>
</html>