Additional TOS Page example for Register Helper

my_pmprorh_init.php

<?php

/*
 * Additional Terms of Service Page example for Register Helper
 * applies formatting & shortcodes, uses post title for field label
 */
function my_pmprorh_init()
{
    // Set additional Terms of Service post ID here.
    $tos_page = 4;

    $post = get_post($tos_page);

    $content = apply_filters('the_content', $post->post_content);
    $html = '<div id="pmpro_license">' . $content . '</div>
        <input type="checkbox" name="custom_tos" value="1" id="custom_tos" /> <label class="pmpro_normal pmpro_clickable" for="custom_tos">I Agree</label>
';

    $field = new PMProRH_Field('custom_tos', 'html', array(
        'html' => $html,
        'label' => $post->post_title,
        'required' => true,
        'class' => 'custom_tos'
    ));

    //add field to checkout page
    pmprorh_add_registration_field('checkout_boxes', $field);
}
add_action('init', 'my_pmprorh_init');