Cannot get 'trusted_domains' to apply

Sure, there’s only one file: config.php. I’ve blanked out everything I’m rather not share (or am unsure of sharing):

<?php
$CONFIG = array (
  'instanceid' => ‘_________’,
  'passwordsalt' => ‘_______________’,
  'trusted_domains' => 
  array (
    0 => ‘__________’,
  ),
  'datadirectory' => '/srv/ocdata',
  'version' => '10.4.0.4',
  'dbtype' => 'mysql',
  'dbname' => 'owncloud',
  'dbhost' => 'localhost',
  'dbuser' => ‘________’,
  'dbpassword' => ‘__________’,
  'dbtableprefix' => 'oc_',
  'installed' => true,
  'forcessl' => true,
  'logfile' => '/var/log/owncloud.log',
  'loglevel' => 1,
  'logtimezone' => ‘___________’,
  'theme' => '',
  'maintenance' => false,
  'secret' => ‘____________________’,
  'trashbin_retention_obligation' => 'auto',
  'memcache.local' => '\\OC\\Memcache\\APCu',
  'memcache.locking' => '\\OC\\Memcache\\Redis',
  'redis' => 
  array (
    'host' => 'localhost',
    'port' => 6379,
  ),
  'mail_domain' => ‘___________’,
  'mail_from_address' => 'owncloud',
  'mail_smtpmode' => 'php',
  'overwrite.cli.url' => '/owncloud',
);