Set ACF Free + ACF PRO Google Maps API key in WordPress (plugin) (Bedrock based WordPress installation)

example.php

<?php
// Authorize API for project:
// https://console.developers.google.com/apis/api/places_backend?project=_

// Uses GOOGLE_API_KEY environment variable (WordPress Bedrock dotenv)

$google_api_key = getenv('GOOGLE_API_KEY');

if($google_api_key !== false and !empty($google_api_key)) {

  // ACF
  add_filter('acf/fields/google_map/api', function($value) {
	global $google_api_key;

    return array(
      'libraries' => 'places',
      'key'	      => $google_api_key
	);
  });

  // ACF PRO
  add_action('acf/init', function() {
	global $google_api_key;

    acf_update_setting('google_api_key', $google_api_key);
  });

}