Customize the PMPro Sponsored Levels' email by placing the sponsor code and link details at the bottom of the email.

pmprosm-email-message-at-bottom.php

<?php
/**
 * This recipe places the sponsor message at the bottom of the confirmation mail.
 *
 * 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_pmpro_pmproet_pmprosm_custom_filters() {
	global $pmprosm_sponsored_account_levels;

	// Is Sponsored Members active and the array available?
	if ( ! function_exists( 'pmprosm_pmpro_email_body' ) || empty( $pmprosm_sponsored_account_levels ) || ! is_array( $pmprosm_sponsored_account_levels ) ) {
		return;
	}

	if ( function_exists( 'my_pmprosm_email_msg_bottom' ) ) {
		remove_filter( 'pmpro_email_body', 'pmprosm_pmpro_email_body', 10, 2 );

		if ( has_filter( 'pmpro_email_filter', 'pmproet_email_filter' ) && function_exists( 'my_pmproet_email_filter' ) ) {
			remove_filter( 'pmpro_email_filter', 'pmproet_email_filter', 10, 1 );
			add_filter( 'pmpro_email_filter', 'my_pmproet_email_filter', 10, 1 );
			add_filter( 'pmproet_email_body', 'my_pmprosm_email_msg_bottom', 10, 2 );
		} else {
			add_filter( 'pmpro_email_body', 'my_pmprosm_email_msg_bottom', 10, 2 );
		}
	}

}
add_action( 'init', 'my_pmpro_pmproet_pmprosm_custom_filters' );


function my_pmprosm_email_msg_bottom( $body, $pmpro_email ) {

	global $wpdb, $pmprosm_sponsored_account_levels;

	// Is Sponsored Members active and the array available?
	if ( ! function_exists( 'pmprosm_pmpro_email_body' ) || empty( $pmprosm_sponsored_account_levels ) || ! is_array( $pmprosm_sponsored_account_levels ) ) {
		return $body;
	}

	//only checkout emails, not admins
	if ( strpos( $pmpro_email->template, 'checkout' ) !== false && strpos( $pmpro_email->template, 'admin' ) === false && strpos( $pmpro_email->template, 'debug' ) === false ) {
		$user_id  = $wpdb->get_var( "SELECT ID FROM $wpdb->users WHERE user_email = '" . esc_sql( $pmpro_email->data['user_email'] ) . "' LIMIT 1" );
		$level_id = $pmpro_email->data['membership_id'];
		$code_id  = pmprosm_getCodeByUserID( $user_id );

		if ( ! empty( $user_id ) && ! empty( $code_id ) && pmprosm_isMainLevel( $level_id ) ) {
			// Get code.
			$code = pmprosm_getDiscountCodeByCodeID( $code_id );

			// Get sponsored levels.
			$pmprosm_values = pmprosm_getValuesByMainLevel( $level_id );
			if ( ! is_array( $pmprosm_values['sponsored_level_id'] ) ) {
				$sponsored_level_ids = array( $pmprosm_values['sponsored_level_id'] );
			} else {
				$sponsored_level_ids = $pmprosm_values['sponsored_level_id'];
			}

			// No sponsored levels to use codes for.
			if ( empty( $sponsored_level_ids ) || empty( $sponsored_level_ids[0] ) ) {
				return $body;
			}

			if ( isset( $pmprosm_values['add_created_accounts_to_confirmation_email'] ) && $pmprosm_values['add_created_accounts_to_confirmation_email'] === true ) {
				$children = pmprosm_getChildren( $user_id );
				if ( ! empty( $children ) ) {
					$message  = '<p>' . esc_html__( 'Accounts created at checkout:', 'pmpro-sponsored-members' ) . '<br />';
					$message .= '<ul>';
					foreach ( $children as $child_id ) {
						$child    = get_userdata( $child_id );
						$message .= '<li>' . esc_html( $child->display_name ) . ' ( ' . $child->user_email . ' ) </li>';
					}
					$message .= '</ul>';

					$body .= $message;
				}
			}

			// Check if we should update confirmation email.
			if ( isset( $pmprosm_values['hide_display_discount_code'] ) && $pmprosm_values['hide_display_discount_code'] === true ) {
				return $body;
			}

			// Check if we should update confirmation email.
			if ( isset( $pmprosm_values['add_code_to_confirmation_email'] ) && $pmprosm_values['add_code_to_confirmation_email'] === false ) {
				return $body;
			}

			// Figure out urls for code.
			$code_urls    = array();
			$pmpro_levels = pmpro_getAllLevels( true, true );
			foreach ( $sponsored_level_ids as $sponsored_level_id ) {
				$level_name  = $pmpro_levels[ $sponsored_level_id ]->name;
				$code_urls[] = array(
					'name' => $level_name,
					'url'  => pmpro_url( 'checkout', '?level=' . $sponsored_level_id . '&discount_code=' . $code->code ),
				);
			}

			// Build message.
			$message = '<p>' . sprintf( esc_html__( 'Give this code to your sponsored members to use at checkout: %s', 'pmpro-sponsored-members' ), $code->code ) . '<br />';

			if ( count( $code_urls ) > 1 ) {
				$message .= esc_html__( 'Or provide one of these direct links to register:', 'pmpro-sponsored-members' ) . '</p>';
			} else {
				$message .= esc_html__( 'Or provide this direct link to register:', 'pmpro-sponsored-members' ) . '</p>';
			}

			$message .= '<ul>';
			foreach ( $code_urls as $code_url ) {
				$message .= '<li>' . esc_html( $code_url['name'] ) . ': <strong>' . esc_url( $code_url['url'] ) . '</strong></li>';
			}
			$message .= '</ul>';

			$body .= $message;
		}
	}
	return $body;
}
add_filter( 'my_pmproet_email_body', 'my_pmprosm_email_msg_bottom', 10, 2 );


function my_pmproet_email_filter( $email ) {

	global $pmproet_email_defaults;

	//is this email disabled or is it not in the templates array?
	if ( pmpro_getOption( 'email_' . $email->template . '_disabled' ) == 'true' ) {
		return false;
	}

	//leave the email alone if it's not in the list of templates
	if ( empty( $pmproet_email_defaults[ $email->template ] ) ) {
		return $email;
	}

	$et_subject = pmpro_getOption( 'email_' . $email->template . '_subject' );
	$et_header  = pmpro_getOption( 'email_header_body' );
	$et_body    = pmpro_getOption( 'email_' . $email->template . '_body' );
	$et_footer  = pmpro_getOption( 'email_footer_body' );

	if ( ! empty( $et_subject ) ) {
		$email->subject = $et_subject;
	}

	//is header disabled?
	if ( pmpro_getOption( 'email_header_disabled' ) != 'true' ) {
		if ( ! empty( $et_header ) ) {
			$temp_content = $et_header;
		} else {
			$temp_content = pmproet_getTemplateBody( 'header' );
		}
	} else {
		$temp_content = '';
	}

	if ( ! empty( $et_body ) ) {
		$temp_content .= $et_body;
		$temp_content  = apply_filters( 'my_pmproet_email_body', $temp_content, $email );
	} else {
		$temp_content .= pmproet_getTemplateBody( $email->template );
		$temp_content  = apply_filters( 'my_pmproet_email_body', $temp_content, $email );
	}

	//is footer disabled?
	if ( pmpro_getOption( 'email_footer_disabled' ) != 'true' ) {
		if ( ! empty( $et_footer ) ) {
			$temp_content .= $et_footer;
		} else {
			$temp_content .= pmproet_getTemplateBody( 'footer' );
		}
	}

	$email->body = $temp_content;

	// Temporary workaround for avoiding double period when using !!membership_change!!
	$email->body = str_replace( '!!membership_change!!.', '!!membership_change!!', $email->body );

	//replace data
	foreach ( $email->data as $key => $value ) {
		$email->body    = str_replace( '!!' . $key . '!!', $value, $email->body );
		$email->subject = str_replace( '!!' . $key . '!!', $value, $email->subject );
	}

	$email->subject = html_entity_decode( $email->subject, ENT_QUOTES );

	return $email;
}