Register Helper Example For Paid Memberships Pro.

register-helper.php

<?php
/**
 * Copy this code (below) into your PMPro Customizations Plugin - https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */
 
 function my_pmprorh_init()
{
	//don't break if Register Helper is not loaded
	if(!function_exists( 'pmprorh_add_registration_field' )) {
		return false;
	}


	$states = array(
		'' => 'Please Select',
		'AL' => 'Alabama',
		'AK' => 'Alaska',
		'AZ' => 'Arizona',
		'AR' => 'Arkansas',
		'CA' => 'California',
		'CO' => 'Colorado',
		'CT' => 'Connecticut',
		'DE' => 'Delaware',
		'DC' => 'District Of Columbia',
		'FL' => 'Florida',
		'GA' => 'Georgia',
		'HI' => 'Hawaii',
		'ID' => 'Idaho',
		'IL' => 'Illinois',
		'IN' => 'Indiana',
		'IA' => 'Iowa',
		'KS' => 'Kansas',
		'KY' => 'Kentucky',
		'LA' => 'Louisiana',
		'ME' => 'Maine',
		'MD' => 'Maryland',
		'MA' => 'Massachusetts',
		'MI' => 'Michigan',
		'MN' => 'Minnesota',
		'MS' => 'Mississippi',
		'MO' => 'Missouri',
		'MT' => 'Montana',
		'NE' => 'Nebraska',
		'NV' => 'Nevada',
		'NH' => 'New Hampshire',
		'NJ' => 'New Jersey',
		'NM' => 'New Mexico',
		'NY' => 'New York',
		'NC' => 'North Carolina',
		'ND' => 'North Dakota',
		'OH' => 'Ohio',
		'OK' => 'Oklahoma',
		'OR' => 'Oregon',
		'PA' => 'Pennsylvania',
		'RI' => 'Rhode Island',
		'SC' => 'South Carolina',
		'SD' => 'South Dakota',
		'TN' => 'Tennessee',
		'TX' => 'Texas',
		'UT' => 'Utah',
		'VT' => 'Vermont',
		'VA' => 'Virginia',
		'WA' => 'Washington',
		'WV' => 'West Virginia',
		'WI' => 'Wisconsin',
		'WY' => 'Wyoming',
);
	
	//define the fields
	$fields = array();
	$fields[] = new PMProRH_Field(
		'date_of_birth',						// input name, will also be used as meta key
		'text',							// type of field
		array(
			'label'		=> 'Date of Birth',			// custom field label
			'size'		=> 40,				// input size
			'profile'	=> true,			// show in user profile
			'required'	=> true,			// make this field required
		)
	);
	$fields[] = new PMProRH_Field(
		'profile_picture',                   				// input name, will also be used as meta key
		'file',							// type of field
		array(
			'label'		=> 'Profile Picture',		// custom field label
			'profile'	=> true,		// only show in profile for admins
			'required'  => true,
		)
	);

	$fields[] = new PMProRH_Field(
		'facebook',						// input name, will also be used as meta key
		'text',							// type of field
		array(
			'label'		=> 'Facebook Link',			// custom field label
			'size'		=> 40,				// input size
			'profile'	=> true,			// show in user profile
			'required'	=> true,			// make this field required
		)
	);

	$fields[] = new PMProRH_Field(
		'city',						// input name, will also be used as meta key
		'text',							// type of field
		array(
			'label'		=> 'City',			// custom field label
			'size'		=> 40,				// input size
			'profile'	=> true,			// show in user profile
			'required'	=> true,			// make this field required
		)
	);

	$fields[] = new PMProRH_Field(
		'state',						// input name, will also be used as meta key
		'select',						// type of field
		array(
			'label' => 'State',
			'options' => $states
		)
	);
	
	//add the fields into a new checkout_boxes are of the checkout page
	foreach($fields as $field)
		pmprorh_add_registration_field(
			'checkout_boxes',				// location on checkout page
			$field						// PMProRH_Field object
		);
	//that's it. see the PMPro Register Helper readme for more information and examples.
}
add_action( 'init', 'my_pmprorh_init' );