php连接mssql的一些相关经验和总结
为了能让PHP连接MSSQL,系统需要安装MSSQL,PHP,且在PHP.ini中的配置中,将
;extension=php_mssql.dll前面的;去掉
1.连接MSSQL
$conn=mssql_connect("实例名或者服务器IP","用户名","密码");
//测试连接
if($conn)
{
echo "连接成功";
}
2.选择要连接的数据库
mssql_select_db("dbname");
3.执行查询
$rs = mssql_query("select top 1 id,username from tbname",$conn);
或者直接执行update,insert等语句,可以不用为返回结果赋值
mssql_query("update tbname set username='niunv' where id=1");
4.获取记录集行数
echo mssql_num_rows($rs);
5.获取记录集
if($row=mssql_fetch_array($rs))
{
$id = $row[0];//获取ID字段值
$username = $row[1];//获取username字段值
}
6.获取新增记录的ID
将id字段设置为IDENTITY字段,执行insert语句以后,就会产生一个 @@IDENTITY 全局变量值,查询出来就是最后一条新增记录的ID了.
mssql_query("insert into tbname(username) values ('nv')",$conn);
$rs = mssql_query("select @@IDENTITY as id",$conn);
if($row=mssql_fetch_array($rs))
{
echo $row[0];
}
7.释放记录集 //更多 http://www.52mvc.com
mssql_free_result($rs);
8.关闭连接
mssql_close($conn);
注:用PHP操作MSSQL比在ASP连接MYSQL要简单,所以,当需要MSSQL与MYSQL并存时,用PHP连接MSSQL来操作MYSQL与MSSQL并存比较简单好用.如果是ASP连接MYSQL,需要安装一个MYSQL驱动,默认windows的ODBC没有安装,很遗憾...
1.在web服务器上至少安装了mssql的客户端
2.打开php.ini把;extension=php_mssql.dll 前面的分号去掉
有必要话：需要制定extension_dir
3.推荐使用 php
4.数据库的 连接分页可以 到 phpe.net上获取到相应的class
下面是我根据那里 修改的 一个class
/**
*mssql 数据库连接类
**/
class SQL{
var $server;
var $userName;
var $passWord;
var $dataBase;
var $linkID = 0;
var $queryResult;
var $lastInsertID;
var $pageNum = 0;//分页用---共有几条数据
var $ER;
/**
*构造函数
**/
function SQL($Server='',$UserName='',$PassWord='',$DataBase=''){
$this->server = $Server;
$this->userName = $UserName;
$this->passWord = $PassWord;
$this->dataBase = $DataBase;
}
/**
*数据库连接
**/
function db_connect(){
$this->linkID = mssql_pconnect($this->server,$this->userName,$this->passWord);
if(!$this->linkID){
$this->ER = "db_connect($this->server,$this->userName,$this->passWord) error";
return 0;
}
if (!mssql_select_db($this->dataBase,$this->linkID)) {
$this->ER = "mssql_select_db($this->dataBase,$this->lastInsertID) error";
return 0;
}
return $this->linkID;
}
/**public
* function: Check the database, if exist then select
* exist: return 1
* not exist: return 0
*/
function selectDatabase(){
if(mssql_select_db($this->dataBase))
return 1;
else
return 0;
}
/**
*数据操作
**/
function query($Str){
if ($this->linkID == 0) {
$this->ER = "数据库还没有连接！！";
}
$this->queryResult = mssql_query($Str);
//$this->queryResult = mssql_query($Str,$this->linkID);
if (!$this->queryResult) {
$this->ER = "$Str.没有操作成功,query error！！";
return 0;//****************对于php 4.3.9以上版本的错误用1
}
return $this->queryResult;
}
/**
*数据获取
**/
function fetch_array($result){
if($result != "") $this->queryResult = $result;
$rec =mssql_fetch_array($this->queryResult);
if(is_array($rec)){
return $rec;
}
//$this->ER = "没有获取数据！";
return 0;
}
/**public
* function: Free the Query Result
* success return 1
* failed: return 0
*/
function freeResult($result=""){
if($result != "") $this->queryResult = $result;
return mssql_free_result($this->queryResult);
}
/**
*获取影响的的行数
*获取操作过的行数
**/
function num_rows($result=""){
if ($result != "") {
$this->queryResult = $result;
$row = mssql_num_rows($this->queryResult);
return $row;
}
}
/**
*获取查询结果---多个
**/
function result_ar($str=''){
if (empty($str)) {
return 0;
}
$back = array();
$this->queryResult = $this->query($str);
while ($row = $this->fetch_array($this->queryResult)) {
$back[] = $row;
}
return $back;
}
/**
*数据库信息分页
*$Result 数据库操作
*str ==sql语句
*page ==第几页
*showNum ==显示几页
*/
function page($Str,$Page=0,$ShowNum=5){
$back = array();//返回数据
$maxNum = 0;
if ($Str == "") {
$this->ER = "没有数据";
return 0;
}
$this->queryResult = $this->query($Str);
if($this->queryResult){
if($Page==""){
$nopa=0;
}else{
$nopa = ($Page-1)*$ShowNum;
if ($nopa
$nopa = 0;
}
}
$maxNum=$this->num_rows($this->queryResult);
$k=0;
$i=0;
$dd=$this->fetch_array($this->queryResult);
while($dd&&$nopa
if($nopa >= $maxNum) $nopa = $maxNum;
mssql_data_seek($this->queryResult,$nopa);
$row=$this->fetch_array($this->queryResult);
$nopa++;
$i++;
$back[] = $row;
if ($nopa >=$maxNum) {
break;
}
}
}
$this->pageNum = $maxNum;
return $back;
}
/**
*分页的html页码
*/
function page_html($DataNum=0,$Page=1,$ShowNum=3,$web,$Post=''){
if ($DataNum == 0) {
$back = "没有要查询的数据";
}else {
if ($ShowNum
$ShowNum = 3;
}
if ($Page
$Page = 1;
}
if (empty($web)) {
$web = "#";
}
$pageNum = ceil($DataNum/$ShowNum);
if ($Page
$top = "首页
}else {
$top = "首页";
}
if ($Page !==1) {
$upPage = "上一页";
}else {
$upPage = "上一页";
}
if ($Page
$downPage = "下一页";
}else {
$downPage = "下一页";
}
if ($Page == $pageNum) {
$foot = ">>尾页";
}else {
$foot = " >>尾页";
}
$back =
共 $pageNum 页
第 $Page/$pageNum 页 $top $upPage $downPage $foot
EOT;
}
return $back;
}
}//end class
?>
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