public static function getInstance()
{
if (!self::$_instance) {
// If no instance then make one
self::$_instance = new self();
}
return self::$_instance;
}
/**
* 创建db对象
*/
public static function getInstance()
{
if (!is_object(self::$_instance)) {
self::$_instance = new Db();
}
return self::$_instance;
}
/**
* @return Db
*/
public static function instance()
{
if (is_null(self::$_instance)) {
self::$_instance = self::factry();
}
return self::$_instance;
}
/**
* 取得数据库类实例
* @static
* @access public
* @return mixed 返回数据库驱动类
*/
public static function getInstance($db_config = '')
{
if (self::$_instance == null) {
self::$_instance = new Db($db_config);
}
return self::$_instance;
}
public static function getInstance()
{
if (self::$_instance == null) {
self::$_instance = new PDO('mysql:host=localhost;dbname=localization;charset=utf8;"', 'root', 'sera');
}
return self::$_instance;
}
public static function getInstance($which_db = 'model')
{
if (self::$_instance == null) {
self::$_instance = self::_connect($which_db);
}
return self::$_instance;
}
/**
* Статическая функция, которая возвращает
* экземпляр класса или создает новый при
* необходимости
* @return Db
*/
public static function getInstance()
{
if (null === self::$_instance) {
self::$_instance = new self();
}
return self::$_instance;
}
/**
* 获取数据库单例实例
*
* @return object self
* @author Seven Du <*****@*****.**>
**/
public static function getInstance($config = null)
{
if (!self::$_instance instanceof self) {
self::$_instance = new self($config);
}
return self::$_instance;
}
public static function getInstance()
{
if (!self::$_instance instanceof self) {
self::$_instance = new self();
}
return self::$_instance;
}
/**
* Get Db object instance (Singleton)
*
* @return object Db instance
*/
public static function getInstance()
{
if (!isset(self::$_instance)) {
self::$_instance = new MySQL();
}
return self::$_instance;
}
public static function getInstance()
{
if (is_null(self::$_instance)) {
return self::$_instance = new self();
} else {
return self::$_instance;
}
}
public static function getInstance()
{
if (self::$_instance == null) {
self::$_instance = new PDO("mysql:host=localhost;dbname=translations", "root", "");
self::$_instance->query("SET NAMES utf8");
}
return self::$_instance;
}
private function conectar()
{
$this->link = "mysql:host={$this->servidor};dbname={$this->base_datos}";
try {
self::$_instance = new PDO($this->link, $this->username, $this->passwd);
} catch (PDOException $e) {
echo "error: " . $e->getMessage();
}
}
public static function getInstance()
{
// If no instance then make one
if (!self::$_instance) {
//echo( "New connection<br>" );
Logger::write("DEBUG", "New connection");
self::$_instance = new self();
}
return self::$_instance;
}
public static function getInstance(array $config)
{
if (empty($config)) {
throw new SixException("请传入正确的数据库参数！", 1);
}
$this->_config = array_filter($config);
if (!self::$_instance instanceof self) {
self::$_instance = new self();
}
return self::$_instance;
}
/**
* 实例化
*/
public static function getInstance()
{
// 判断是否被实例化
// 访问实例的公共的静态方法
if (!self::$_instance instanceof self) {
//本类的属性$_instance是否是本类的实例
//self指的是本类
self::$_instance = new self();
}
return self::$_instance;
}
/**
* 获取一个数据库的单列
*
* @return object Db instance
*/
public static function getInstance()
{
if (!self::$_instance) {
if (DB_TYPE == 'pdo') {
self::$_instance = new DbPdo(DB_SERVER, DB_USER, DB_PASSWD, DB_NAME);
} elseif (DB_TYPE == 'mysqli') {
self::$_instance = new DbMySQLI(DB_SERVER, DB_USER, DB_PASSWD, DB_NAME);
} else {
self::$_instance = new DbMySQL(DB_SERVER, DB_USER, DB_PASSWD, DB_NAME);
}
}
return self::$_instance;
}
public static function getInstance()
{
if (self::$_instance instanceof PDO) {
return self::$_instance;
} else {
try {
return self::$_instance = new PDO(self::$dsn, self::$user, self::$password);
} catch (Exception $error) {
echo $error->getCode() . '<br>';
echo $error->getMessage() . '<br>';
echo $error->getLine() . '<br>';
}
}
}
public static function getInstance()
{
if (self::$_instance === null) {
$database = array();
$database['type'] = 'mysql';
$database['databases'] = 'lianjia';
$database['server'] = 'localhost';
$database['user'] = '******';
$database['password'] = '******';
$database['charset'] = 'utf8';
$database['port'] = 3306;
self::$_instance = new \Db\medoo(['database_type' => $database['type'], 'database_name' => $database['databases'], 'server' => $database['server'], 'username' => $database['user'], 'password' => $database['password'], 'charset' => $database['charset'], 'port' => $database['port'], 'option' => [PDO::ATTR_CASE => PDO::CASE_NATURAL]]);
}
return self::$_instance;
}
/**
* 取得数据库类实例
* @static
* @access public
* @param mixed $config 连接配置
* @return Object 返回数据库驱动类
*/
public static function getInstance($config = array())
{
if (!$config) {
$config = Yaf_Registry::get('database');
}
$id_server = count($config) == 1 ? 0 : 1;
$md5 = md5(serialize($config));
if (!isset(self::$instance[$md5])) {
// 兼容mysqli
if ('mysqli' == $config[$id_server]['type']) {
$config[$id_server]['type'] = 'mysql';
}
// 如果采用lite方式 仅支持原生SQL 包括query和execute方法
$class = ucwords(strtolower($config[$id_server]['type']));
Yaf_Loader::import(dirname(__FILE__) . '/Db/Driver/' . $class . '.php');
// if(file_exists($class.'.php')){
self::$instance[$md5] = new $class($config[$id_server]);
//}
}
self::$_instance = self::$instance[$md5];
return self::$_instance;
}
/**
* 取得数据库类实例
* @static
* @access public
* @param mixed $config 连接配置
* @return Object 返回数据库驱动类
*/
public static function getInstance($config = array())
{
$md5 = md5(serialize($config));
if (!isset(self::$instance[$md5])) {
// 解析连接参数 支持数组和字符串
$options = self::parseConfig($config);
// 兼容mysqli
if ('mysqli' == $options['type']) {
$options['type'] = 'mysql';
}
// 如果采用lite方式 仅支持原生SQL 包括query和execute方法
$class = !empty($options['lite']) ? 'Think\\Db\\Lite' : 'Think\\Db\\Driver\\' . ucwords(strtolower($options['type']));
if (class_exists($class)) {
self::$instance[$md5] = new $class($options);
} else {
// 类没有定义
E(L('_NO_DB_DRIVER_') . ': ' . $class);
}
}
self::$_instance = self::$instance[$md5];
return self::$_instance;
}
public static function getInstance($config = array())
{
if (self::$_instance == null) {
self::$_instance = new Db($config);
}
return self::$_instance;
}
public static function set(Db $db)
{
self::$_instance = $db;
}
/**
* @param string $host
* @param string $username
* @param string $password
* @param string $db
* @param int $port
*/
public function __construct($host = NULL, $username = NULL, $password = NULL, $db = NULL, $port = NULL, $charset = 'utf8')
{
$isSubQuery = false;
// if params were passed as array
if (is_array($host)) {
foreach ($host as $key => $val) {
${$key} = $val;
}
}
// if host were set as mysqli socket
if (is_object($host)) {
$this->_mysqli = $host;
} else {
$this->host = $host;
}
$this->username = $username;
$this->password = $password;
$this->db = $db;
$this->port = $port;
$this->charset = $charset;
if ($isSubQuery) {
$this->isSubQuery = true;
return;
}
// for subqueries we do not need database connection and redefine root instance
if (!is_object($host)) {
$this->connect();
}
$this->setPrefix();
self::$_instance = $this;
}
