I can access a function in a package using OCI drivers but not PDO drivers

Question

Hello all, i am a newbie to Oracle and its drivers for PHP. I would like to use PDO, and I have my database activity in packages, which have procedures and functions. My package has overloaded functions and that has been giving me a tough time with these drivers. So one signature of my function get_data contains a four arguments and all four are numbers, while another signature of get_data has the first two as numbers and the next two as varchar2. So when I try to access this function which is part of a package, I am able to retrieve data, and the driver I am using is OCI8, but when I try to do the same with PDO, it does not work. It gives me this error,
*General error: 6553 OCIStmtExecute: ORA-06553: PLS-307: too many declarations of 'GET_DATA' match this call  (/var/www/php-5.3.3/ext/pdo_oci/oci_statement.c:146)' in /var/www/pdo_check.php:251 Stack trace: #0 /var/www/pdo_check.php(251): PDOStatement->execute() #1 /var/www/pdo_check.php(345): dbPDO->execPackage2() #2 {main} thrown in /var/www/pdo_check.php on line 251 *
I got this error earlier with OCI drivers, then I added the datatype while binding the values.
Has anybody had this headache earlier??
##Works
*$qu = oci_parse($connect, 'select pack.get_data(:p1,:p2,:p3,:p4)as rc from dual');
$p1 = (int)121;
$p2 = (int)222;
$p3 = (int)324;
$p4 = (int)001;
oci_bind_by_name($qu,":p1",$p1,10,OCI_B_INT);
oci_bind_by_name($qu,":p2",$p2,10,OCI_B_INT);
oci_bind_by_name($qu,":p3",$p3,10,OCI_B_INT);
oci_bind_by_name($qu,":p4",$p4,10,OCI_B_INT);
oci_execute($qu) or die("did not execute");
$r = oci_fetch_array($qu);*
##Does not work
*$sql = 'select pack.get_data(:p1,:p2,:p3,:p4) from dual';
$result = $this->dbConnect->prepare($sql);
$p1 = (int)2;
$p2 = (int)2;
$p3 = (int)2;
$p4 = (int)6;
$result->bindParam(':p1', $p1, PDO::PARAM_INT);
$result->bindParam(':p2', $p2, PDO::PARAM_INT);
$result->bindParam(':p3', $p3, PDO::PARAM_INT);
$result->bindParam(':p4', $p4, PDO::PARAM_INT);
$result->execute();*
I am still perplexed why is PDO giving me an error, when I have virtually mentioned everything is asks for?

Answer 1

I think the only person who can really answer this question is Chris Jones. For my money I tend to steer clear of PDO as it is a bit quirky ( at least in my experience ) and it does not support reference cursors.