public static function free($arrConf_or_strModName = null, $subid = null)
{
if ($arrConf_or_strModName == null) {
$ks = array_keys(self::$_instances);
} elseif (is_array($arrConf_or_strModName)) {
$ks = array(self::idOfConnection($arrConf_or_strModName));
} else {
$ini = sooh_ini::getInstance();
$dbid = $ini->get('dbByObj.' . $arrConf_or_strModName);
if ($dbid === null) {
$dbid = $ini->get('dbByObj.default');
}
if (is_array($dbid)) {
if ($subid === null) {
$ks = array();
foreach ($dbid as $subid) {
$ks[] = self::idOfConnection(self::confOfMod($arrConf_or_strModName, $subid));
}
} else {
$ks = array(self::idOfConnection(self::confOfMod($arrConf_or_strModName, $subid)));
}
} else {
$ks = array(self::idOfConnection(self::confOfMod($arrConf_or_strModName, null)));
}
}
if (sooh_trace::needsWrite(__CLASS__)) {
sooh_trace::obj('final free these db(s):', $ks);
}
foreach ($ks as $id) {
if (isset(self::$_instances[$id])) {
self::$_instances[$id]->free();
unset(self::$_instances[$id]);
}
}
}