Multiple isset checks php

Question

I'm trying to implement multiple if(isset()) statements but I can't get it to work.

example:

if (isset($_GET['a']) or isset($_GET['b'])) {
    // HTML
} else {
    // HTML
    <a href="?link=a>LinkA</a>
    <a href="?link=b>LinkB</a>
}

When I click a or b I still got the else statement executed.

I also tried:

if (isset($_GET['a'] or $_GET['b']))

but then I get a error

I'm trying to display different pages on different $_GET requests. Can someone point me in the right direction or is this not the right way to do this?

Answer 1

You are checking wrong variable.

You need to check $_GET ['link']

Answer 2

Change if (isset($_GET['a']) or isset($_GET['b'])) To:

if ( (isset($_GET['link']) && $_GET['link'] == 'a') OR (isset($_GET['link']) && $_GET['link'] == 'b']) )