<form id="registerPage" action="registerPage.php" method="post">
<fieldset>
<legend>Registration Form</legend>
<label for="username">username</label>
<input id="username" type="text" name="data[username]" value="<?php echo (isset($data) && $status['duplicate']) ? $data['username'] : NULL; ?>">
<label>password</label>
<input type="password" name="data[password]">
<label>confirm password</label>
<input type="password" name="data[verify]">
<label>first name</label>
<input type="text" name="data[first_name]" value="<?php echo (isset($data['first_name']) && $data['first_name']) ? $data['first_name'] : NULL; ?>">
<label>last name</label>
<input type="text" name="data[last_name]" value="<?php echo (isset($data['last_name']) && $data['last_name']) ? $data['last_name'] : NULL; ?>">
<label>email address</label>
<input type="text" name="data[emailAddress]" value="<?php echo (isset($data['emailAddress']) && $status['validEmail']) ? $data['emailAddress'] : NULL; ?>">
<input type="submit" name="submit" value="register">
</fieldset>
</form>