web-utils/load_config.php

<?php

if (!file_exists('./config.php')) {
  die('Config file not present');
}

$config = require('./config.php');

if (!is_array($config)) {
  die('Config must be an array');
}

// a basic validation of config keys
if (!(isset($config['domain']) && strlen($config['domain']) > 0)) {
  die('Domain key not present in config');
}
if (!(isset($config['modules']) && count($config['modules']) > 0)) {
  die('Modules key not present in config or no modules configured');
}
if (!(isset($config['auth']) && count($config['auth']) > 0)) {
  die('Auth key not present in config or no auth configured');
}