/**
* 静态方法，返回数据库连接实例
*/
public static function getInstance()
{
if (self::$instance == null) {
self::$instance = new MySqlii();
}
return self::$instance;
}
public static function getInstance()
{
if (class_exists('mysqli', FALSE)) {
return MySqlii::getInstance();
} else {
if (class_exists('mysql', FALSE)) {
return MySql::getInstance();
} else {
emMsg('服务器空间PHP不支持MySql数据库');
}
}
}
public static function getInstance()
{
switch (Option::DEFAULT_MYSQLCONN) {
case 'mysqli':
return MySqlii::getInstance();
break;
case 'mysql':
default:
return MySql::getInstance();
break;
}
}
/**
* 获取Db实例
* @param null
*/
public function getDbInstance()
{
if (!is_null($this->_db)) {
return $this->_db;
}
if (class_exists('mysqli')) {
$this->_db = MySqlii::getInstance();
} else {
$this->_db = MySql::getInstance();
}
return $this->_db;
}
public function __construct()
{
if (is_null(self::$DbHandler)) {
if (class_exists('mysqli')) {
self::$DbHandler = MySqlii::getInstance();
} else {
self::$DbHandler = MySql::getInstance();
}
}
$this->tableName = DB_PREFIX . $this->tableName;
$this->fields = $this->getDbFields();
foreach ($this->fields as $key => $value) {
$this->SQLfields .= $this->parseKey($value) . ',';
}
$this->SQLfields = rtrim($this->SQLfields, ',');
#查询的全字段预处理
}
