这个问题一直延续到我先前的以下职位:here。

由于没有编辑你原来的职位,就无法再次抽出密码,因此,我正在开一个新职位。 并且,这还包含有PHP代码。

我写了两门,一是开放和关闭数据库,二是提供各种可再利用的职能,供亚洲开发银行使用。

下面是我关于连接班的PHP代码:

<?php
/**
* DBConnection Base Class Definition
*/

/* Include dependency */
require_once("configdbconfig.php");

abstract class dbconnection 
{
 var $conn;
 //Opens connection for a MySQL DB
 abstract function OpenConnection()
 {
  $conn = mysql_connect(DB_HOST, DB_USER, DB_PASSWORD) 
     or die($this->ShowError(mysql_error()));
  mysql_select_db(DB_NAME) or die ($this->ShowError("Connection to MySQL Database Failed. "));  
 }
 
 //Closes connection for a MySQL DB
 abstract function CloseConnection()
 {
  try
  {
   mysql_close($conn);
  }
  catch(exception $ex)
  {
   $this->ShowError($ex);
  }
 }
 
 protected function ShowError($err)
 {
  echo "<script>alert( Error:   +". $err .");</script>"; 
 }  
}
?>

The file included in the abovecode:

<?php
//Modify constants with data needed to access your own database
define( DB_HOST , localhost:3306 );
define( DB_NAME , MyStore );
define( DB_USER , super );
define( DB_PASSWORD , **** );
?>

下面是我关于抽象类别和接口的询问(续我先前的以下职位):

(1) Can a connection class be abstract? Are the methods written correctly?
(2) Instead of making the second code a file "dbconfig.php", will it be good to make an Interface for it?