app/Views/form2.php

<html>
<head>
    <title>My Form</title>
</head>
<body>

    <?= validation_list_errors() ?>

    <?= form_open('form2') ?>

        <h5>Username</h5>
        <input type="text" name="username" value="<?= set_value('username') ?>" size="50">
        <?php
        $errors = validation_errors();
        if (isset($errors['username'])) {
            echo validation_show_error('username');
        }
        ?>

        <h5>Password</h5>
        <input type="text" name="password" value="<?= set_value('password') ?>" size="50">
        <?= validation_show_error('password') ?>

        <h5>Password Confirm</h5>
        <input type="text" name="passconf" value="<?= set_value('passconf') ?>" size="50">
        <?= validation_show_error('passconf') ?>

        <h5>Email Address</h5>
        <input type="text" name="email" value="<?= set_value('email') ?>" size="50">
        <?= validation_show_error('email') ?>

        <h5>What do you like?</h5>
        <input type="checkbox" name="fruit[]" value="apple" <?= set_checkbox('fruit', 'apple', true) ?>>apple
        <input type="checkbox" name="fruit[]" value="grape" <?= set_checkbox('fruit', 'grape') ?>>grape

        <div><input type="submit" value="Submit"></div>

    <?= form_close() ?>

</body>
</html>