Register script help?

[mystic-spiritus]

I'm making an online dog simulation (like furry-paws.com) and I'm new to PHP. Whenever I fill out the register form it tells me its not filled out. I also think that I did the values wrong.

Can anyone check this over and help me to fix it?

<?php
include('connect.php');
include('header.php');

if($loggedin == '1')
die("You can only have one account!");

// Register Script

if(isset($_POST['submit']))
{

// trim removes the whitespaces from the beginning and end of text
// this keeps someone from having a username of " "
$uname = trim($_POST['username']);

// Make sure all forms were filled out.

if((!isset($_POST['username'])) || (!isset($_POST['pass']))
|| ($uname == '') || ($_POST['pass'] == ''))
die("Please fill out the form completely. <br><br>
<a href=register.php>Continue</a>");

// Make sure name hasn't already been used.
$check = @mysql_query("SELECT id FROM users WHERE username = '$uname'");
$check = @mysql_num_rows($check);

if($check > 0)
die("Sorry, that username has already been taken. Please try again.
<br><br>
<a href=register.php>Continue</a>");

// Encrypt password
$pass = md5($_POST['pass']);


// Finally, create the record.
$newUser = @mysql_query("INSERT INTO users (username, password, registered, email, kennelname, firstname, lastname, gender, heard_about_site) VALUES ('$uname', '$pass', '$email', '$kennelname', '$firstname', '$lastname', '$gender', '$heard_about_site' )") or die("Error: ".mysql_error());

echo 'You have been registered! You may now <a href=index.php>Log in</a>.';


}
else
{

// form example

echo '<form action=register.php method=post>
Username: <input type=text name=username> <br><br>
Password: <input type=password name=password><br><br>
Email: <input type=text name=email><br><br>
Kennel Name: <input type=text name=kennelname><br><br>
First Name: <input type=text name=firstname><br><br>
Last Name: <input type=text name=lastname><br><br>
Gender: <input type="radio" name="gender" value="male"> Male
<input type="radio" name="gender" value="female"> Female<br><br>
How did you hear about us? <input type=text name=heard_about_site><br>

<input type=submit name=submit value=Submit>
</form>';

}


?>

<?php
include('footer.php') ?>

[djjjozsi]

check your form variable names, and your posted values too:

password in form, but in your php processing part you use $_POST["pass"]

and you should use the empty-if condition:

if (empty($_POST['username']))
$error.="Fill out the username";

if(isset($error))
print "Errors ".$error;

And when you insert your data or select from the database, use mysql_real_escape_string function to keep your database safer from the inputs.