php基础问题，本人不懂php，求帮助

[icele]

[Thu Dec 23 18:18:36 2010] [error] [client 127.0.0.1] PHP Fatal error: Undefined class constant 'PDO::ERRMODE_WARNING' in \\server\\kernal.php on line 46

kernal.php 46行代码
if(class_exists('config')){
$this->config = new config();//46行
}else{
die('config class is missing!');
}

config.php

<?php
/*
 * qWikiOffice Desktop 1.0
 * Copyright(c) 2007-2010, Murdock Technologies, Inc.
 * [e-mail]
 *
 * http://www.qwikioffice.com/license
 */

class config {

   /**
    * Begin editable code.
    * Update the following with your information.
    */

   /**
    * Domain url
    */
   public $DOMAIN = 'www.qwikioffice.com';

   /**
    * Email address
    */
   public $EMAIL = '[e-mail]';

   /**
    * Database connection
    * Using PHP Data Objects (PDO)
    */
   public $DB_CONN_STRING = 'mysql:dbname=qwikioffice1;host=localhost';
   public $DB_USERNAME = 'root';
   public $DB_PASSWORD = 'ok';

   /**
    * Login url
    */
   public $LOGIN_URL = 'login.html';

   /**
    * PDO error mode
    */
   public $PDO_ERROR_MODE = PDO::ERRMODE_WARNING; // development environment
   //public $PDO_ERROR_MODE = PDO::ERRMODE_SILENT; // production environment

   /**
    * PHP error reporting
    * Options are:
    * 1. show all
    * 2. show only warnings
    * 3. show no errors
    */
   private $error_reporting = 'show only warnings';

   // End editable code

   /**
    * Directories
    */
   public $LIBRARIES_DIR = 'modules/common/libraries/';
   public $MODULES_DIR = 'modules/';
   public $THEMES_DIR = 'resources/';
   public $WALLPAPERS_DIR = 'resources/wallpapers/';

   /**
    * Document root
    */
   public $DOCUMENT_ROOT = '';

   /**
    * __construct()
    *
    * @access public
    */
   public function __construct(){
      // set error reporting
      switch($this->error_reporting){
         case 'show all':
            ini_set('display_errors',1);
            error_reporting(E_ALL|E_STRICT);
            break;
         case 'show only warnings':
            ini_set('display_errors',1);
            error_reporting(E_ALL);
            break;
         case 'show no errors':
            error_reporting(0);
            break;
      }

      // set the document root
      $_SERVER['DOCUMENT_ROOT'] = str_replace('\\', '/', getcwd());
      $this->DOCUMENT_ROOT = $_SERVER['DOCUMENT_ROOT'].'/';
   } // end __construct()
}
?>

什么问题，好像是php mysql的问题。

[ihefe]

这个未定义 PDO::ERRMODE_WARNING

装了pdo吗？

[xianglf]

PHP对新手的最大问题就是各种组件的加载

[zhaojunwww]

$this->config = new config();//46行
改成$config = new config();试试 $this都是类内部调用 用在这里是神马一丝

[床上等您]

pdo没有扩展吧

[igaojie]

pdo扩展····

[skyaspnet]

找到PHP.ini文件中的：

;extension=php_pdo.dll
;extension=php_pdo_firebird.dll
;extension=php_pdo_informix.dll
;extension=php_pdo_mssql.dll
;extension=php_pdo_mysql.dll
;extension=php_pdo_oci.dll
;extension=php_pdo_oci8.dll
;extension=php_pdo_odbc.dll
;extension=php_pdo_pgsql.dll
;extension=php_pdo_sqlite.dll

要用到哪些就打开哪些

此外还是需要确认你的PHP扩展文件夹里有没有这些文件，

没有的话需要去官方进行下载安装