class?PdoMySQL{	
public?static?$config=array();//設置連接參數,配置信息	
public?static?$link=null;//保存數據庫連接對象(連接標識符)	
public?static?$pconnect=false;//是否開啟長連接	
public?static?$dbVersion=null;//保存數據庫版本	
public?static?$connected=false;//判斷是否連接成功	
public?static?$PDOStatement=null;//保存PDOSTATEMENT對象	
public?static?$queryStr=null;//保持最后執行的操作	
public?function?__construct($dbConfig=''){		
if(!class_exists("PDO")){			
self::throw_exception('不支持PDO，請先開啟');		
}		
if(!is_array($dbConfig)){			
$dbConfig=array(			
'hostname'=>DB_HOST,			
'username'=>DB_USER,			
'password'=>DB_PWD,			
'database'=>DB_NAME,			
'hostport'=>DB_PORT,			
'dbms'=>DB_TYPE,			
'dsn'=>DB_TYPE.":hsot=".DB_HOST.";dbname=".DB_NAME			
);		
}	
if(empty($dbConfig['hostname']))self::throw_exception('沒有定義數據庫');	
self::$config=$dbConfig;	
if(empty($config['params']))self::$config['params']=array();	
if(!isset(self::$link)){		
$configs=self::$config;		
if(self::$pconnect){			
//開啟長連接，添加到配置數組中			
$configs['params'][constant("PDO::ATTR_PERSISTENT")]=true;		
}		
try{			
self::$link=new?PDO($configs['dsn'],$configs['username'],$configs['password'],$configs['params']);		}catch(PDOException?$e){			
self::throw_exception($e->getMessage());		
}		
if(!self::$link){			
self::throw_exception('PDO連接錯誤');			
return?false;		
}		
self::$link->exec('SET?NAMES?'.DB_CHARSET);		
self::$dbVersion=self::$link->getAttribute(constant("PDO::ATTR_SERVER_VERSION"));		
self::$connected=true;		
unset($configs);	
}	
}	
//得到所有記錄	
public?static?function?getAll($sql=null){	
if(!$sql){		
self::query($sql);	
}	
$result=self::$PDOStatement->fetchAll(constant("PDO::FETCH_ASSOC"));	
return?$result;		
}	
//釋放結果集	
public?static?function?free(){		
self::$PDOStatement=null;	
}	
public?static?function?query($sql=''){		
$link=self::$link;		
if(!link)?return?false;		
//判斷之前是否有結果集，如果有的話釋放結果集		
if(!empty(self::$PDOStatement))self::free();		
self::$queryStr=$sql;		
self::$PDOStatement=$link->prepare(self::$queryStr);		
$res=self::$PDOStatement->execute();		
self::haveErrorThrowException();		
return?$res;	
}	
public?static?function?haveErrorThrowException(){	
$obj=empty(self::$PDOStatement)?self::$link:?self::$PDOStatement;	
$arrError=$obj->errorInfo();	
print_r($arrError);	
}	
//自定義錯誤處理	
public?static?function?throw_exception($errMsg){		
echo?'<div?style="width:80%;background-color:#ABCDEF;color:black;font-size:20px?0px;">		
'.$errMsg.'		
</div>';	
?}
}
require_once'config.php';
$PdoMySQL=new?PdoMySQL;
var_dump($PdoMySQL);

?

G:\Demo\20180718\Pdomysqlclass.php:88:object(PdoMySQL)[1]

沒有顯示出哪里出問題了，有大哥能看看哪里出錯了嗎？謝謝！