将PHP变量传递给oci_parse中的sql查询

Question

I am passing a PHP varibale into a oracle sql query. but its not taking it properly giving me ORA errors like - invalid character. I tried escaping the varibale as \'$sid\', this makes error go, but the query doesnt return anything. Is there a way to pass PHP variable to oracle query

if(isset($_POST['action']))
{
   $sid = $_POST['action'];
   $stid = oci_parse($conn, 'SELECT emp from table emp='$sid'');
   oci_execute($stid);
}

I have removed to the database connection part for brevity.

Answer 1

'SELECT emp from table emp=\'$sid\'' is a string that you pass exactly as it is to Oracle, this is why it doesn't work.

You need to use oci_bind_by_name to bind a placeholder to a PHP variable.

Example:

$variable = 42;
$stid = oci_parse($conn, 'SELECT col_name FROM tbl_name WHERE col_name > :num;');
oci_bind_by_name($stid, ":num", $variable);
oci_execute($stid);