mypmpro-add-old-level-name-to-email.php

<?php //do not copy

/**
 * This recipe will show either the last level a member had, or if they're a new member.
 * 
 * Use the !!old_level_name!! variable in an email template. 
 * 
 * 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_add_old_level_name_to_email_filter( $email ){

	//Default to 'New Member' if no old level found
	$email->data['old_level_name'] = "New Member";

	$user = get_user_by( 'email', $email->data['user_email'] );
	
    $user_id  = $user->ID ?? null;
    $order_id = $email->data['order_id'] ?? null;

    if ( empty( $user_id ) || empty( $order_id ) ) {
        return $email;
    }

    // Get full membership history (including inactive/old levels)
    $levels = pmpro_getMembershipLevelsForUser( $user_id, true );

    if ( empty( $levels ) || ! is_array( $levels ) ) {
        return $email;
    }

    // Get the last *inactive* level (exclude current active one if present)
    $old_levels = array_filter( $levels, function( $level ) {
        return ( empty( $level->enddate ) || $level->enddate < current_time( 'mysql' ) );
    });

    // Sort by enddate descending so last ended is first
    usort( $old_levels, function( $a, $b ) {
        return strtotime( $b->enddate ) <=> strtotime( $a->enddate );
    });

    if ( ! empty( $old_levels ) ) {
        $last_old_level = reset( $old_levels );
        $email->data['old_level_name'] = "Previous Plan: " . $last_old_level->name;
    }

    return $email;
}
add_filter( 'pmpro_email_filter', 'my_pmpro_add_old_level_name_to_email_filter', 10, 1 );