<?php
// Connection variables.
$db_type = "";
$db_host = "";
$db_user = "";
$db_password = "";
$db_database = "";

// We test the connection with the database.
try
{
    $db = new PDO($db_type.":host=".$db_host.";dbname=".$db_database, $db_user, $db_password);
}
catch (Exception $e)
{
    // If the current user has the administrator status, we display the
    // complete error message.
    if (isset($_SESSION['status']) && $_SESSION['status'] == 'admin')
        die("Error : " . $e->getMessage());
    // Else, we display a generic error message with no details.
    else
        die("Error : Impossible to establish the connection with the database.");
}

// Used to handle database error messages.
function mySqlError($db)
{
    // If the current user has the administrator status, we display the
    // complete error message.
    if (isset($_SESSION['status']) && $_SESSION['status'] == 'admin')
        print_r($db->errorInfo());
    // Else, we display a generic error message with no details.
    else
        echo "Error : Sorry, an SQL error has occured.";
}
?>