public static function getInstance($conf = null)
{
if (!self::$_instance instanceof self) {
self::$_instance = new self($conf);
}
return self::$_instance;
}
public static function init($server = null, $username = null, $password = null, $database = null, $is_permantent = false)
{
if (self::$_instance == null) {
self::$_instance = new Mysql($server, $username, $password, $database, $is_permantent);
}
return self::$_instance;
}
/**
* 静态方法，单例访问统一入口
* @return Singleton返回应用中的唯一对象实例
*/
public static function getInstance()
{
if (!self::$_instance instanceof self) {
self::$_instance = new self();
}
return self::$_instance;
}
public static function init()
{
if (null === self::$_instance) {
self::$_instance = new Mysql();
}
return self::$_instance;
}
/** static public function get_instance
* Returns the singleton instance
* of the MySQL Object as a reference
*
* @param array optional configuration array
* @action optionally creates the instance
* @return MySQL Object reference
*/
public static function get_instance($config = null)
{
try {
if (is_null(self::$_instance)) {
self::$_instance = new Mysql($config);
}
self::$_instance->test_connection();
self::$_instance->_log(__METHOD__ . ' --------------------------------------');
} catch (MySQLException $e) {
throw $e;
}
return self::$_instance;
}
