php - access database connection - Fatal error

Question

I've been trying to connect to access using php, but a connection error keep appearing. The code is:

<?php

function ConnectToDatabase()
{
    $connectionstring = 'odbc:Driver={Microsoft Access Driver (*.mdb, *.accdb)};Dbq=C:\\xampp\\htdocs\\Assignment5\\Data\\assignment5.mdb';
    $dbHandle =new PDO($connectionstring);
    $dbHandle->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    return $dbHandle;
}

?>

The error is:

Fatal error: in C:\xampp\htdocs\Assignment5\connection.php on line 6

I have already enabled the extension in php.ini, but it still does not work.