Add Register Helper fields to the admin checkout notification email.

my-pmprorh-extra-fields-admin-email.php

<?php
/**
 * Add Custom Registration Fields and their values to the Admin Checkout Notification Email.
 *
 * You can add this recipe to your site by creating a custom plugin
 * or using the Code Snippets plugin available for free in the WordPress repository.
 * Read this companion article for step-by-step directions on either method.
 * https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */

function my_pmprorh_add_extra_fields_to_admin_email( $email ) {
	global $wpdb;

	//only update admin confirmation emails
	if ( ! empty( $email ) && strpos( $email->template, 'checkout' ) !== false && strpos( $email->template, 'admin' ) !== false ) {
		//get the user_id from the email
		$user_id = $wpdb->get_var( "SELECT ID FROM $wpdb->users WHERE user_email = '" . $email->data['user_email'] . "' LIMIT 1" );

		if ( ! empty( $user_id ) ) {
			//get meta fields
			global $pmprorh_registration_fields;

			$profile_fields = array();
			if ( ! empty( $pmprorh_registration_fields ) ) {
				//cycle through groups
				foreach ( $pmprorh_registration_fields as $where => $fields ) {
					//cycle through fields
					foreach ( $fields as $field ) {
						if ( ! is_a( $field, 'PMProRH_Field' ) || ! pmprorh_checkFieldForLevel( $field, 'profile', $user_id ) ) {
							continue;
						}

						if ( ! empty( $field->profile ) ) {
								$profile_fields[] = $field;
						}
					}
				}
			}
			unset( $fields );

			$fields = $profile_fields;

			//add to bottom of email
			if ( ! empty( $fields ) ) {
				$email->body .= '<p>Extra Fields (Admin) :<br />';
				foreach ( $fields as $field ) {
					if ( ! is_a( $field, 'PMProRH_Field' ) ) {
						continue;
					}

					$email->body .= '- ' . $field->label . ': ';

					$value = get_user_meta( $user_id, $field->meta_key, true );
					if ( $field->type == 'file' && is_array( $value ) && ! empty( $value['fullurl'] ) ) {
						$email->body .= $value['fullurl'];
					} elseif ( is_array( $value ) ) {
						$email->body .= implode( ', ', $value );
					} else {
						$email->body .= $value;
					}

					$email->body .= '<br />';
				}
				$email->body .= '</p>';
			}
		}
	}

	return $email;
}


function swop_pmprorh_pmpro_email_filter_extra_fields() {
	// Let's only do this if Register Helper is active
	if ( ! function_exists( 'pmprorh_add_registration_field' ) ) {
		return;
	}
	remove_filter( 'pmpro_email_filter', 'pmprorh_pmpro_email_filter' );
	add_filter( 'pmpro_email_filter', 'my_pmprorh_add_extra_fields_to_admin_email', 10, 2 );
}
add_action( 'init', 'swop_pmprorh_pmpro_email_filter_extra_fields' );