PDO 封装类

最新推荐文章于 2021-04-13 05:50:48 发布

weixin_30950607

最新推荐文章于 2021-04-13 05:50:48 发布

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CC 4.0 BY-SA版权

文章标签：数据库

原文链接：http://www.cnblogs.com/lovehx/p/7181870.html

<?php

/**
 * PDO Mysql 简单封装
 * @author Kl_PENG QQ群：207776690
 */
class PdoHelper {

    //单例模式
    private static $_instance;

    const DB_HOST = 'localhost';
    const DB_PORT = '3306';
    const DB_NAME = 'test';
    const DB_USER = 'root';
    const DB_PASS = '';
    const DB_CHARSET = 'utf8';

    protected $_sql = '';

    //构造函数
    private function __construct() {
        $this->dsn = 'mysql:host=' . self::DB_HOST . ';port=' . self::DB_PORT . ';dbname=' . self::DB_NAME;
        $this->dbuser = self::DB_USER;
        $this->dbpass =