php连接不同数据库的几种方法

3. $conn = new Com("ADODB.Connection"); //实例化一个Connection对象

4. $connstr = "provider=sqloledb;datasource=.;uid=sa;pwd=123456;database=jnold;";
5. $conn->Open($connstr);
6. $rs = new Com("ADODB.Recordset"); //实例化一个Recordcount对象

7. $rs->Open('select * from News where bigclassid = 59 And LeadPostil is null', $conn, 1, 1);

8. $count = $rs->RecordCount;
9. echo "共有{$count}条纪录
   ";
10. for($i = 0; $i < $count ; $i++){
11. $arr_result[$i]['Title'] = addslashes($rs->Fields('Title')->Value);//标题
12. $arr_result[$i]['Color'] = addslashes($rs->Fields('titlecolor')->Value?$rs->Fields('titlecolor')->Value:'');//标题颜色
13. $arr_result[$i]['WenHao'] = addslashes($rs->Fields('OtherText')->Value);//文号
14. }

2.ODBC连接mssql

3. $dbhost = '';

4. $dbuser = ''; //你的mssql用户名
5. $dbpass = ''; //你的mssql密码
6. $dbname = ''; //你的mssql库名

7. $connect=odbc_connect("Driver={SQL Server};Server=$dbhost;Database=$dbname","$dbuser","$dbpass");

8. $sql="select * from content";
9. $exec=odbc_exec($connect,$sql);
10. while($row = (odbc_fetch_array($exec)))
11. {
12. $row['id'] //獲取字段值
13. ...
14. }

3.PHP内置函数连接 打开装有php5和apache的服务器上的php.ini文件 去掉;extension=php_mssql.dll前面的分号";" 重启apache服务器即可 其次:将安装有sqlserver2000的服务器数据库打上sp3补丁,因为打上sp3补丁,可以开启1433端口. 最后,web服务器上安装sqlserver2000客户端工具

2. $dbh=mssql_connect("192.168.12.124","sa","");
3. mssql_select_db("mydb", $dbh);
4. ?>

这个方法经常会连接不上,好像是一个dll文件版本的问题

4.连接access数据的方法

2. $db=$_SERVER['DOCUMENT_ROOT']."/PHP_ACCESS/include/#mydb.mdb"; //這裏最好用$_SERVER['DOCUMENT_ROOT']獲取路徑
3. $conn = new COM('ADODB.Connection') or die('can not start Active X Data Objects');
4. $conn->Open("DRIVER={Microsoft Access Driver (*.mdb)}; DBQ=$db");
5. $rs = $conn->Execute('SELECT * FROM contents order by id desc');
6. while(!$rs->EOF)
7. {
8. echo $rs->Fields['name']->Value;
9. $rs->MoveNext();
10. }
11. /*释放资源*/
12. $rs->Close();
13. $conn->Close();
14. $rs = null;
15. $conn = null;

5.连接MySQL方法：

3. $database_connection=null;

4. $hostname="localhost";

5. $database="5aart";
6. $username="root";
7. $password="1234";
8. global $database_connection;
9. $database_connection=mysql_connect($hostname,$username,$password) or die(mysql_error());
10. mysql_query("set names 'gbk'");
11. mysql_select_db($database,$database_connection) or die(mysql_error());

6.连接SQLserver的方法

2. $dbhost = 'localhost';
3. $dbuser = 'sa'; //你的mssql用户名
4. $dbpass = '1234'; //你的mssql密码
5. $dbname = '0772fang'; //你的mssql库名
6. $connect=odbc_connect("Driver={SQL Server};Server=$dbhost;Database=$dbname","$dbuser","$dbpass");
7. $sql="update news_pk set ffnums=ffnums+1 where newsID='$ID'";
8. $exec=odbc_exec($connect,$sql);