In Bedrock installations, where WP is treated as a composer dependency, it is installed in a separate folder. Find the wp-load.php scanning any immediate subdirectory of each ancestor, so it works regardless of whether the WordPress folder is named wp, wordpress, cms, or anything else.

stripewebhook.php

<?php

// If called directly by Stripe, bootstrap WordPress so we can use plugin functions
if (!defined('ABSPATH')) {
  // try to locate wp-load.php by walking up the directory tree
  $search_dir = __DIR__;
  $wp_load = '';
  for ($i = 0; $i < 10; $i++) {
    $possible = $search_dir . '/wp-load.php';
    if (file_exists($possible)) {
      $wp_load = $possible;
      break;
    }
    $parent = dirname($search_dir);
    if ($parent === $search_dir) {
      // reached root
      break;
    }
    $search_dir = $parent;
  }

  // Bedrock layout: WordPress core lives in a subdirectory (e.g. web/wp/ or web/cms/)
  // Walk up and scan immediate children at each level for a folder containing wp-load.php
  if (!$wp_load) {
    $try_dir = __DIR__;
    for ($i = 0; $i < 10; $i++) {
      foreach (glob($try_dir . '/*/wp-load.php') ?: [] as $candidate) {
        $wp_load = $candidate;
        break 2;
      }
      $parent = dirname($try_dir);
      if ($parent === $try_dir) break;
      $try_dir = $parent;
    }
  }

  // fallback: document root (covers some multi-domain setups)
  if (!$wp_load && isset($_SERVER['DOCUMENT_ROOT'])) {
    $doc = rtrim($_SERVER['DOCUMENT_ROOT'], "/\\");
    if (file_exists($doc . '/wp-load.php')) {
      $wp_load = $doc . '/wp-load.php';
    }
  }
  if ($wp_load) {
    require_once $wp_load;
  } else {
    // Cannot bootstrap WP; log and exit    
    error_log('WPGV: stripewebhook.php could not locate wp-load.php');
    http_response_code(500);
    exit();    
  }
}