in the 1.mvc framework, there is an error in the database operation class, and there is a file whose code is the same as mine. Why am I wrong?
class MySQLPDO {
//
private $dbConfig = array(
"db" => "MYSQL",
"host" => "localhost",
"port" => "3306",
"user" => "root",
"pass" => "root",
"charset" => "utf8",
"dbname" => "mvc_study",
);
//
private static $instance;
//PDO
private $db;
//
private function __construct($params){
$this->dbConfig = array_merge($this->dbConfig,$params);
$this->connect();
}
//
public static function getInstance($params=array()){
if(!self::$instance instanceof self){
//new self()$params
self::$instance = new self($params);
}
return self::$instance;
}
//
private function __clone(){}
//
private function connect(){
try{
$dsn = "{$this->dbConfig["db"]}:port={$this->dbConfig["port"]};host={$this->dbConfig["host"]};dbname={$this->dbConfig["dbname"]};charset={$this->dbConfig["charset"]}";
$pdo = new PDO($dsn,$this->dbConfig["user"],$this->dbConfig["pass"]);
$pdo->query("set names {$this->dbConfig["charset"]}");
}catch(PDOException $e){
$e->getMessage();
}
}
//sql
public function query($sql){
return $this->db->query($sql);
}
//
public function fetchRow($sql){
return $this->query($sql)->fetch(PDO::FETCH_ASSOC);
}
//
public function fetchAll($sql){
return $this->query($sql)->fetchAll(PDO::FETCH_ASSOC);
}
}
? >
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