php 连接odbc数据源并保存 查询数据

$connstr = "driver=microsoft access driver (*.mdb);dbq=".realpath("db.mdb");
$connid = odbc_connect($connstr,"","",sql_cur_use_odbc);

$odbc_exec = odbc_exec($connid, "insert into t……")

$a = 0;
$begintime = time();
while($a<100)
{
   
    $conn = odbc_connect("forphp教程","sa","sa");
    //odbc_select_db("[testyouhui]",$conn);

    $result = odbc_exec("select [id], [name] from [test1].[dbo].[category]",$conn);
    $a++;
    odbc_close($conn);
}
$endtime = time();
echo $begintime."
";
echo $endtime."
";

echo date('u秒',$endtime-$begintime);
echo '
';