ThinkPHP/Extend/Driver/Db/DbSqlsrv.class.php

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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2012 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();
/**
 * Sqlsrv数据库驱动
 * @category   Extend
 * @package  Extend
 * @subpackage  Driver.Db
 * @author    liu21st <liu21st@gmail.com>
 */
class DbSqlsrv extends Db{
    protected $selectSql  =     'SELECT T1.* FROM (SELECT thinkphp.*, ROW_NUMBER() OVER (%ORDER%) AS ROW_NUMBER FROM (SELECT %DISTINCT% %FIELD% FROM %TABLE%%JOIN%%WHERE%%GROUP%%HAVING%) AS thinkphp) AS T1 %LIMIT%%COMMENT%';
    /**
     * 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 ( !function_exists('sqlsrv_connect') ) {
            throw_exception(L('_NOT_SUPPERT_').':sqlsrv');
        }
        if(!empty($config)) {
            $this->config	=	$config;
        }
    }

    /**
     * 连接数据库方法
     * @access public
     */
    public function connect($config='',$linkNum=0) {
        if ( !isset($this->linkID[$linkNum]) ) {
            if(empty($config))	$config  =  $this->config;
            $host = $config['hostname'].($config['hostport']?",{$config['hostport']}":'');
            $connectInfo  =  array('Database'=>$config['database'],'UID'=>$config['username'],'PWD'=>$config['password'],'CharacterSet' => C('DEFAULT_CHARSET'));
            $this->linkID[$linkNum] = sqlsrv_connect( $host, $connectInfo);
            if ( !$this->linkID[$linkNum] )  $this->error(false);
            // 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);
        }
        return $this->linkID[$linkNum];
    }

    /**
     * 释放查询结果
     * @access public
     */
    public function free() {
        sqlsrv_free_stmt($this->queryID);