//erreur

Notice: Undefined variable: db in C:\wamp\www\touchyourmusic.free.fr\blue1ce\jbtools.php on line 15
Fatal error: Call to a member function query() on a non-object in C:\wamp\www\touchyourmusic.free.fr\blue1ce\jbtools.php on line 15

//mysqlconnect.php

try
{
    $db = new PDO('mysql:host=localhost;dbname=blue1ce', 'root', '');
}
catch (Exception $e)
{
        die('Error : ' . $e->getMessage());
}

//jbtools.php

include("scripts/mysqlconnect.php");

function versionfetch($tool)
{
    global $db; // et comme ca ?
    $table = $db->query('SELECT * FROM jbtoolsversions'); // <--- LIGNE 15
    do{
        $data = $table->fetch();
    } while($data['tool'] != $tool);
    $table->closeCursor();

    return $data['version'];
}