PHP如何透过ODBC来存取数据库
使用的环境
先建立一个测试用的数据库
接着建立一个ODBC连结
再建个测试用的PHP Script
咱们来测试吧
使用的环境
本文件主要是在Win32的环境下作说明, 您需要的是台跑Windows 9x/NT/2000的计算机, 并装有任何一种web server和PHP3或PHP4, 且可正确执行PHP Script. 并有一种以上的SQL数据库软件, 例如:Access...
本文件以MS-Access数据库来作说明, 其它种的数据库端, 皆可以类似的方法来作ODBC连结.
先建立一个测试用的数据库
进入MS-Access, 建立一个odbctest.mdb的档案.
开始建立一个数据表(table).
此数据表我们给它两个字段: id 和 name.
将此资料表命名为 Class .
接着我们输入一些数据.例如:
接着建立一个ODBC连结
开启 控制台 里的 "ODBC 数据来源" .
选择 "系统数据来源名称" 页.
点选 "新增..." 按钮.
选择你想使用的 ODBC 驱动程序. 在此请选择 "Microsoft Access Driver", 当然若您使用其它种的数据库端, 就选择该数据库的ODBC Driver.
点选 "完成" 按钮.
接着会出现这个窗口, 来作进一步的设定.
输入数据来源名称为 "WebDB" . 描述的部分可以随便输入, 自己了解就可以了.
按 "选取..." 钮, 输入您欲连结的数据库档案位置. 例如: 这里的 c:\odbctest.mdb
接着再点选 "进阶..." 钮. 会出现这个画面:
您需要输入的部分是 : 登入名称和密码, 在此我们先分别设成 'webuser' 和 'webpassword'.
OK了. ODBC的设定部分已经完成了.
再建个测试用的PHP Script
以下是个测试用的PHP Script内容, 请将它save起来, 例如存到您web server的文件根目录.
function Error_Handler( $msg, $cnx )
{
echo "$msg \n";
// 为避免占用连结, 在程序结束前close掉是很重要的.
odbc_close( $cnx);
exit();
}
// 建立一个 ODBC 连结, 传回至 $cnx
$cnx = odbc_connect( 'WebDB' , 'webuser', 'webpassword' );
// 在测试时若有权限上问题, 也许你可以使用 superadmin 来存取 :
// $cnx = odbc_connect( 'WebDB' , [sa login] , [sa password] );
if( ! $cnx ) {
Error_handler( "在 odbc_connect 有错误发生" , $cnx );
}
// 送出一个简单的 odbc query . 传回一个 odbc 指标
$cur= odbc_exec( $cnx, "select id,name from Class" );
if( ! $cur ) {
Error_handler( "在 odbc_exec 有错误发生( 没有指标传回 ) " , $cnx );
}
echo "
座号 | 姓名 |
---|---|
$id | $name |
共 $num_row 人 |
odbc_close( $cnx);
?>
咱们来测试吧
从您的网页浏览器, 开启浏览这个测试用的PHP Script.
如果一切正确无误的话, 您应该可以看到以下的数据:
座号 姓名
1 Ernest
2 Norman
3 PHP/Zend RC
4 ODBCCooler
5 我是五号
6 六号就是我
共 6 人

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