public function load()
{
// apply data from master config
$master_filename = Config::util_config_filename(0, $this->_preview);
$data = Config::util_array_from_file($master_filename);
if (is_null($data) && $this->_preview) {
// try to read production data when preview not available
$master_filename = Config::util_config_filename(0, false);
$data = Config::util_array_from_file($master_filename);
}
// try to get legacy data
if (is_null($data)) {
$master_filename = Config::util_config_filename_legacy(0, $this->_preview);
$data = self::util_array_from_file_legacy($master_filename);
}
if (is_array($data)) {
$data = $this->upgrade($data);
foreach ($data as $key => $value) {
$this->_data[$key] = $value;
}
}
if ($this->is_master()) {
return;
}
// apply child config
$child_filename = Config::util_config_filename($this->_blog_id, $this->_preview);
$data = Config::util_array_from_file($child_filename);
if (is_null($data) && $this->_preview) {
// try to read production data when preview not available
$child_filename = Config::util_config_filename($this->_blog_id, false);
$data = Config::util_array_from_file($child_filename);
}
// try to get legacy data
if (is_null($data)) {
$child_filename = Config::util_config_filename_legacy($this->_blog_id, $this->_preview);
$data = self::util_array_from_file_legacy($child_filename);
}
if (is_array($data)) {
$data = $this->upgrade($data);
foreach ($data as $key => $value) {
if (!ConfigCompiler::child_key_sealed($key, $this->_data, $data)) {
$this->_data[$key] = $value;
}
}
}
}
/**
* Check config file
*
* @param Config $config
* @param Util_Environment_Exceptions $exs
*/
private function notify_no_config_present($config, $exs)
{
if ((file_exists(Config::util_config_filename(0, false)) || file_exists(Config::util_config_filename_legacy(0, false))) && $config->get_integer('common.instance_id', 0) != 0) {
return;
}
$onclick = 'document.location.href=\'' . addslashes(wp_nonce_url('admin.php?page=w3tc_general&w3tc_save_options', 'w3tc')) . '\';';
$button = '<input type="button" class="button w3tc" ' . 'value="save the settings" onclick="' . $onclick . '" />';
$exs->push(new Util_Environment_Exception('<strong>W3 Total Cache:</strong> ' . 'Default settings are in use. The configuration file could ' . 'not be read or doesn\'t exist. Please ' . $button . ' to create the file.'));
}
