mypmpro-forward-stripe-temporary-webhook.php

<?php //do not copy

/* This recipe will forward all requests from a temporary webhook URL 
 * to the current PMPro Stripe Webhook URL
 *
 * 1. Navigate to Memberships > Settings > Payment Gateway and Edit Settings on the Stripe Gateway
 * 2. Disable your webhook - do not create a new one
 * 3. Login to your Stripe account, navigate to Webhooks
 * 4. Create a new webhook with the URL of https://MYSITE.com/?pmpro-api=stripe_webhook
 * 5. For testing purposes, enable all Stripe events
 *
 * 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_forward_stripe_webhook() {

	if ( empty( $_REQUEST['pmpro-api'] ) ) {
		return;
	}

	$raw_body = file_get_contents( 'php://input' );

	// Get Stripe signature header
	$stripe_signature = '';
	if ( isset( $_SERVER['HTTP_STRIPE_SIGNATURE'] ) ) {
		$stripe_signature = $_SERVER['HTTP_STRIPE_SIGNATURE'];
	}

	$args = array(
		'body'        => $raw_body,
		'headers'     => array(
			'Content-Type'     => 'application/json',
			'Stripe-Signature' => $stripe_signature,
		),
		'timeout'     => 60,
		'httpversion' => '1.1',
	);

	$response = wp_safe_remote_post(
		'https://YOUR_SITE_URL/wp-admin/admin-ajax.php?action=stripe_webhook',
		$args
	);

	if ( is_wp_error( $response ) ) {
		status_header( 500 );
		exit;
	}

	// Return same response Stripe expects
	echo wp_remote_retrieve_body( $response );
	exit;
}
add_action( 'init', 'my_pmpro_forward_stripe_webhook', 99 );