function array_merge_recursive_config(array $array1, array $array2)
{
$merged = $array1;
foreach ($array2 as $key => &$value) {
if (is_null($value)) {
// we want to unset the key in $array1
unset($merged[$key]);
} elseif (is_array($value) && isset($merged[$key]) && is_array($merged[$key])) {
$merged[$key] = array_merge_recursive_config($merged[$key], $value);
} else {
$merged[$key] = $value;
}
}
return $merged;
}
protected function mergeConfigsFromPath($path)
{
$configs = [];
$ids = [];
$dependencies = [];
// read the differents config files
foreach (glob($path . '/*.config.php') as $configFile) {
$id = basename($configFile, '.config.php');
$configs[$id] = (include $configFile);
$ids[] = $id;
if (isset($configs[$id]['_import'])) {
$configs[$id]['_import'] = (array) $configs[$id]['_import'];
foreach ($configs[$id]['_import'] as $dependency) {
$dependencies[] = [$dependency, $id];
}
unset($configs[$id]['_import']);
}
}
if (count($configs) > 1) {
$ids = \topological_sort($ids, $dependencies);
if (empty($ids)) {
throw new \RuntimeException('Cannot sort configs');
}
}
// merge them in a logical order
$config = [];
foreach ($ids as $id) {
$config = \array_merge_recursive_config($config, $configs[$id]);
}
return $config;
}
