String query parameter

[Anon]

index.php need $id
(function max($id)) so I request like this
http://.../index.php?id=200 but if I want to
request just index.php (without id=200)
like this

    ../index.php?  or
    ../index.php

It'll generate error
How can I solve this problem?

Very thanks 🙂

[retoknaak]

Check if $id is defined like this:

if (isset($id)) {....} else {....}

In this wya you could set a default value or skip instructions with $id