public static function run()
{
if (!isset(self::$_instance)) {
self::$_instance = new DB();
}
return self::$_instance;
}
public static function getInstance()
{
if (FALSE == self::$_instance instanceof self) {
self::$_instance = new self();
}
return self::$_instance;
}
public function query($query)
{
if (stripos(ltrim($query), 'SELECT') === 0) {
return coreDB::dbGetData($query);
} else {
return coreDB::dbSetData($query);
}
}
/**
* 连接到从数据库
* @param $host
* @param $port
* @param $username
* @param $password
*/
private function connSlave($host, $port, $username, $password)
{
if (!self::$slave) {
self::$slave = $this->setConnect($host, $port, $username, $password);
}
}
/**
* 删除数据
* @param [type] $table [description]
* @param [type] $condition [description]
* @param integer $limit [description]
* @return [type] [description]
*/
public static function delete($table, $condition, $limit = 0)
{
if ($limit) {
$limit = intval($limit);
}
self::$sql = "DELETE FROM " . self::table($table) . " where " . $condition . " limit " . $limit;
return self::exec();
}