Paid Memberships Pro Affiliate Program: Integration Guide | AffiliateBase

<?php
// Add to your theme's functions.php or custom plugin
// Track Paid Memberships Pro membership sign-ups
add_action('pmpro_after_checkout', 'affiliatebase_track_pmp_signup', 10, 2);

function affiliatebase_track_pmp_signup($user_id, $morder) {
    // Get affiliate ID from cookie or URL parameter
    $affiliate_id = isset($_COOKIE['affiliate_id']) ? $_COOKIE['affiliate_id'] : null;
    
    if ($affiliate_id && $morder->status === 'success') {
        $api_key = get_option('affiliatebase_api_key');
        $membership_level = pmpro_getMembershipLevelForUser($user_id);
        
        wp_remote_post('https://api.affiliatebase.com/track-conversion', [
            'headers' => [
                'Content-Type' => 'application/json',
                'Authorization' => 'Bearer ' . $api_key,
            ],
            'body' => json_encode([
                'affiliateId' => $affiliate_id,
                'type' => 'membership_signup',
                'amount' => $morder->total,
                'currency' => $morder->currency,
                'customerId' => $user_id,
                'subscriptionId' => $morder->subscription_transaction_id,
                'metadata' => [
                    'membership_level_id' => $membership_level->id,
                    'membership_level_name' => $membership_level->name,
                    'order_id' => $morder->id,
                ],
            ]),
        ]);
    }
}

// Track subscription renewals
add_action('pmpro_subscription_payment_completed', 'affiliatebase_track_pmp_renewal', 10, 2);

function affiliatebase_track_pmp_renewal($subscription, $order) {
    // Get original affiliate from subscription metadata
    $affiliate_id = get_user_meta($subscription->user_id, 'affiliatebase_affiliate_id', true);
    
    if ($affiliate_id && $order->status === 'success') {
        // Track renewal conversion
        // Similar code as above but with type: 'membership_renewal'
    }
}