public function save()
{
$data = array('version' => $this->_data['version']);
if ($this->is_master()) {
foreach ($this->_data as $key => $value) {
$data[$key] = $this->_data[$key];
}
} else {
// write only overwrited keys
$master = new ConfigCompiler(0, $this->_preview);
$master->load();
foreach ($this->_data as $key => $value) {
if (!ConfigCompiler::child_key_sealed($key, $master->_data, $this->_data)) {
$data[$key] = $this->_data[$key];
}
}
}
$filename = Config::util_config_filename($this->_blog_id, $this->_preview);
if (defined('JSON_PRETTY_PRINT')) {
$config = json_encode($data, JSON_PRETTY_PRINT);
} else {
// for older php versions
$config = json_encode($data);
}
Util_File::file_put_contents_atomic($filename, $config);
}
/**
* Slower version of loader, used when configs belong to older w3tc version
*/
private function load_full()
{
$c = new ConfigCompiler($this->_blog_id, $this->_preview);
$c->load();
$this->_data = $c->get_data();
}
