查询语句中可否用php变量？？？？？

[wangyoucao1234]

查询语句： $temp_table_name=$e_lurudanwei."_".$sub_name[$i][$k];
$query="select ".$sub_name[$i][$k]." from ".$temp_table_name;

调用函数出错：
$num_of_sub_kind[$i]=num_of_subs_getting($query);


function num_of_subs_getting($query)
{

$connection=ora_logon("feng@bnyypkxt","feng");
$cursor= ora_open($connection);
ora_commitoff($connection);
if (!(ora_parse($cursor,$query) or die))
{ return "-1";
exit;}

if (! (ora_exec($cursor)))
{ return "0";
exit;
}
$result=array();
while(ora_fetch_into($cursor,$result))
{

$data.=$result[$i]."!#$%";



}

ora_close($cursor);
ora_logoff($connection);
return $data;
}
错误：
Warning: Ora_Parse failed (ORA-00911: 无效字符 -- while processing OCI function OPARSE) in d:\newfile\bnyypkxt20030713\web\cgi\luru_main.php on line 559

[ustcfrank]

$query="select ".$sub_name[$i][$k]." from "$temp_table_name;

[ustcfrank]

上面的错了

$temp_table_name=$e_lurudanwei."_".$sub_name[$i][$k];

$s_n_i_k=$sub_name[$i][$k];

$query="select '$s_n_i_k' from '$temp_table_name'";