Our Register Helper Fields plugin from the August 19th, 2015 Webinar.

register_helper_webinar_sample_code.php

<?php
/*
Plugin Name: Register Helper Example
Plugin URI: http://www.paidmembershipspro.com/wp/pmpro-customizations/
Description: Register Helper Initialization Example
Version: .1
Author: Stranger Studios
Author URI: http://www.strangerstudios.com
*/

/*
  Included below are a lot of fields making use of various Register Helper field types, properties, and features.
  
  The fields themselves won't make a lot of sense, and we did edit this plugin many times during the webinar.
  
  Still it might be useful as reference for some.
*/

//we have to put everything in a function called on init, so we are sure Register Helper is loaded
function my_pmprorh_init()
{
    //don't break if Register Helper is not loaded
    if(!function_exists("pmprorh_add_registration_field"))
    {
        return false;
    }
	
	//define the checkout boxes
	pmprorh_add_checkout_box("personal_info", "Personal Information");		
	pmprorh_add_checkout_box("company_info", "Company Information");
	
    //define the fields
    $fields = array();
    $fields[] = new PMProRH_Field(
        "text_example",              // input name, will also be used as meta key
        "text",                 // type of field
        array(                       
            "profile"=>false,    // show in user profile
            "label"=>"Text Example",
			"required"=>true,    // make this field required
			"showrequired"=>true,
			"levels"=>array(1,2),
			"memberslistcsv"=>true,
			"class"=>"special-input",
			"divclass"=>"input_div",
        ));			
		
	$fields[] = new PMProRH_Field(
        "admin_notes",              // input name, will also be used as meta key
        "textarea",                 // type of field
        array(                       
            "label" => "bio",
			"profile"=>"only_admin",    // show in user profile
            "required"=>true,    // make this field required
			"hint"=>"Please include information about your work history.",
        ));
   
	//add the fields into a new checkout_boxes are of the checkout page
    foreach($fields as $field)
        pmprorh_add_registration_field(
            "personal_info", // location on checkout page
            $field            // PMProRH_Field object
        );

	$fields = array();
	$fields[] = new PMProRH_Field(
        "awesome",                     // input name, will also be used as meta key
        "checkbox",                         // type of field
        array(
            "label"=>"Are you Awesome?",   // custom field label
            "profile"=>"only_admin",        // only show in profile for admins
			"value"=>"yes this person is awesome",
        ));	
    
	/*
		Depends Example
	*/	
	$fields[] = new PMProRH_Field(
        "interest",                   // input name, will also be used as meta key
        "select",                   // type of field
        array(
            "label"=>"What are you most interested in?",
			"memberslistcsv"=>true,
			"required"=>true,
			"profile"=>true,    // show in user profile
			"options"=>array(       // <option> elements for select field
				""=>"- Chose One -",
				"php"=>"php",
				"wordpress"=>"wordpress",
				"art"=>"art",
				"fun"=>"fun",
				"other"=>"other",
        )));
	
	$fields[] = new PMProRH_Field(
        "interest_other",              // input name, will also be used as meta key
        "text",                 // type of field
        array(                       
            "profile"=>true,    // show in user profile
            "label"=>"Other Interest",
			"showrequired"=>"*",			
			"memberslistcsv"=>true,
			"depends"=>array(
				array('id'=>'interest', 'value'=>'other')
			)
        ));	
	
	$fields[] = new PMProRH_Field(
        "chooseone",                   // input name, will also be used as meta key
        "radio",                   // type of field
        array(
            "options"=>array(       // <option> elements for select field
				"option 1", "option 2", "option 3",
        )));
	
	$fields[] = new PMProRH_Field(
        "hrhtml",              // input name, will also be used as meta key
        "html",                 // type of field
        array(                       
            "html"=>"<hr />",
			"label"=>false,
        ));
	
	$fields[] = new PMProRH_Field(
        "resume",              // input name, will also be used as meta key
        "file",                 // type of field
        array(                       
            "profile"=>true,    // show in user profile
            "required"=>true    // make this field required
        ));

	$fields[] = new PMProRH_Field(
        "affiliate_id",              // input name, will also be used as meta key
        "text",                 // type of field
        array(                                   
			"profile"=>true,
			"readonly"=>true,
			"save_function"=>"my_affiliate_id_save_function",
        ));
	
	//add the fields into a new checkout_boxes are of the checkout page
    foreach($fields as $field)
        pmprorh_add_registration_field(
            "company_info", // location on checkout page
            $field            // PMProRH_Field object
        );
	
	/*
		pmpro_checkout_boxes
		pmpro_after_email
		pmpro_after_password
		pmpro_after_username
		pmprorh_add_checkout_box()
	*/    

    //that's it. see the PMPro Register Helper readme for more information and examples.
}
add_action("init", "my_pmprorh_init");

function my_affiliate_id_save_function($user_id, $field_name, $value)
{
	$value = pmpro_getDiscountCode();
	
	update_user_meta($user_id, $field_name, $value);
}