ThinkPHP/Lib/Driver/Db/DbMysqli.class.php

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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2007 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------

defined('THINK_PATH') or exit();
/**
 * Mysqli数据库驱动类
 * @category   Think
 * @package  Think
 * @subpackage  Driver.Db
 * @author    liu21st <liu21st@gmail.com>
 */
class DbMysqli extends Db{

    /**
     * 架构函数 读取数据库配置信息
     * @access public
     * @param array $config 数据库配置数组
     */
    public function __construct($config=''){
        if ( !extension_loaded('mysqli') ) {
            throw_exception(L('_NOT_SUPPERT_').':mysqli');
        }
        if(!empty($config)) {
            $this->config   =   $config;
            if(empty($this->config['params'])) {
                $this->config['params'] =   '';
            }
        }
    }

    /**
     * 连接数据库方法
     * @access public
     * @throws ThinkExecption
     */
    public function connect($config='',$linkNum=0) {
        if ( !isset($this->linkID[$linkNum]) ) {
            if(empty($config))  $config =   $this->config;
            $this->linkID[$linkNum] = new mysqli($config['hostname'],$config['username'],$config['password'],$config['database'],$config['hostport']?intval($config['hostport']):3306);
            if (mysqli_connect_errno()) throw_exception(mysqli_connect_error());
            $dbVersion = $this->linkID[$linkNum]->server_version;
            
            // 设置数据库编码
            $this->linkID[$linkNum]->query("SET NAMES '".C('DB_CHARSET')."'");
            //设置 sql_model
            if($dbVersion >'5.0.1'){
                $this->linkID[$linkNum]->query("SET sql_mode=''");
            }
            // 标记连接成功
            $this->connected    =   true;
            //注销数据库安全信息
            if(1 != C('DB_DEPLOY_TYPE')) unset($this->config);