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php odbc_connect()函数说明与实例代码

Jun 13, 2016 am 10:08 AM
connect odbc php and code function Example illustrate

连接到 ODBC odbc_connect() 函数用于连接到 ODBC 数据源。该函数有四个参数:数据源名、用户名、密码以及可选的指针类型参数。

连接到 odbc
odbc_connect() 函数用于连接到 odbc 数据源。该函数有四个参数:数据源名、用户名、密码以及可选的指针类型参数。

odbc_exec() 函数用于执行 sql 语句

$db_user="dbuser";         //定义连接用户名
$db_pass="dbpass";         //连接用户对应的密码
$dsn="dsn";          //定义dsn资料来源
if(odbc_connect($dsn,$db_user,$db_pass))    //对odbc数据源进行连接
{
  echo "成功连接到odbc数据源";      //如果成功输出内容
}
else
{
  echo "连接到odbc时出现问题!";     //如果失败输出内容
}

odbc_close_all();        //关闭所有打开的连接
echo "所有打开的odbc连接都已经被关闭!";   //执行函数后输出内容


看一个更高级的与主机连接

$db_host="server.mynetwork";        //定义主机名
$db_user="dbuser";          //定义连接用户名
$db_pass="dbpass";          //定义用户对应的密码
$dsn="dsn";           //定义dsn
$result=odbc_pconnect($dsn,$db_user,$db_pass);    //打开持续有效的odbc连接
if($result)            //对结果进行判断
{
  echo "打开一个持续有效的连接";       //成功执行输出内容
}
echo "
";
if(odbc_close($result))         //尝试关闭连接
{
  echo "关闭了?";          //如果成功关闭输出内容
}
else
{
  echo "不能关!";          //如果关闭失败输出内容
}

查询数据库教程存

数据源进行连接

$my_sql="select * from usertable";      //定义sql语句
$result=odbc_do($myconn,$my_sql);     //执行sql语句
echo odbc_num_rows($result);
echo "n";
echo "n";
echo "n";
echo "n";
echo "n";
echo "n";
while(odbc_fetch_row($result))
{
  echo "n";
  echo "n";
  echo "n";
  echo "n";
  echo "n";
}
echo "
id号nameaddress
".odbc_result($result,1)."".odbc_result($result,2)."".odbc_result($result,3)."
";


一些相关

odbc_free_result($result);        //释放执行sql语句占用的内存
echo "已经成功释放结果集占用的内存!";
odbc_rollback($myconn)取消所有未提交的操作
odbc_commit($myconn) //提交所有未提交的操作
odbc_autocommit($myconn,false);      //禁止自动commit
odbc_columnprivileges($myconn,"dbuser","管理员","usertable","name"); //列出给定表的列和权限
$result=odbc_columns($myconn);      //列出指定表的列的名称
echo odbc_result_all($result); 

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