Re: simple question abt convert to integer

[Negin Nickparsa <nickparsa@xxxxxxxxx>]

$id=(int)$_POST['txt'];
$query1="select * from patient where id=".$id."";
echo $query1;
$result1=mysql_query($query1);

echo $result1;
$num2=Mysql_num_rows($result1);
$num3=Mysql_num_fields($result1);

still it has previous error

Here is my output:select * from patient where id=1
*Warning*: mysql_num_rows() expects parameter 1 to be resource, boolean
given in

*Warning*: mysql_num_fields() expects parameter 1 to be resource, boolean
given in **