php odbc_connect()函数说明与实例代码
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"; n";
echo "id号 n";
echo "name n";
echo "address n";
echo "
while(odbc_fetch_row($result))
{
echo "n"; n";
echo "".odbc_result($result,1)." n";
echo "".odbc_result($result,2)." n";
echo "".odbc_result($result,3)." n";
echo "
}
echo "
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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