PHP连接MSSQL方法汇总

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,$this->passWord) error";
return 0;
}
if (!mssql_select_db($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<0) {
$nopa = 0;
}
}
$maxNum=$this->num_rows($this->queryResult);
$k=0;
$i=0;
$dd=$this->fetch_array($this->queryResult);

while($dd&&$nopa<=$maxNum&&$i<$ShowNum){
if($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<=0) {
$ShowNum = 3;
}
if ($Page<=0) {
$Page = 1;
}
if (empty($web)) {
$web = "#";
}
$pageNum = ceil($DataNum/$ShowNum);
if ($Page <= 1) {
$top = "首页<<";
}else {
$top = "首页<< ";
}
if ($Page !==1) {
$upPage = "上一页";
}else {
$upPage = "上一页";
}
if ($Page < $pageNum) {
$downPage = "下一页";
}else {
$downPage = "下一页";
}
if ($Page == $pageNum) {
$foot = ">>尾页";
}else {
$foot = " >>尾页";
}

$back = <<<EOT

共 $pageNum 页
第 $Page/$pageNum 页 $top $upPage $downPage $foot
EOT;
}
return $back;
}
}//end class
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