Drupal: Acquia Search configurations by environment for Search API Acquia

settings.acquia.php

<?php

// Configs on Acquia Servers.
if (isset($_ENV['AH_SITE_ENVIRONMENT'])) {
 switch ($_ENV['AH_SITE_ENVIRONMENT']) {
   case 'dev':
     $conf['search_api_acquia_overrides']['acquia_search'] = array(
       'path' => '/solr/**CHANGE_ME**.dev.solr4',
       'host' => '**CHANGE_ME**.acquia-search.com',
       'port' => 80,
       'derived_key' => '**CHANGE_ME**',
     );
   break;
   case 'test':
     $conf['search_api_acquia_overrides']['acquia_search'] = array(
       'path' => '/solr/**CHANGE_ME**.dev.solr4',
       'host' => '**CHANGE_ME**.acquia-search.com',
       'port' => 80,
       'derived_key' => '**CHANGE_ME**',
     );
   break;
   case 'rod':
     $conf['search_api_acquia_overrides']['acquia_search'] = array(
       'path' => '/solr/**CHANGE_ME**.dev.solr4',
       'host' => '**CHANGE_ME**.acquia-search.com',
       'port' => 80,
       'derived_key' => '**CHANGE_ME**',
     );
   break;
      case 'prod':
     $conf['search_api_acquia_overrides']['acquia_search'] = array(
       'path' => '/solr/**CHANGE_ME**.dev.solr4',
       'host' => '**CHANGE_ME**.acquia-search.com',
       'port' => 80,
       'derived_key' => '**CHANGE_ME**',
     );
   break;
 }
}