How to do you ensure the page is index.php and !isset($_GET) for nav highlighting

Question

I am making my nav links highlighted when the page is where the link points to. However, because some of my links are simply index.php with GET variables, I am having trouble differentiating that with just index.php.

E.g. index.php and index.php?get=** with $_SERVER['PHP_SELF'] are both /index.php. how do I ensure that the page is at index.php without any get variables?

This is my nav highlighting code.

<?php
if( $_SERVER['PHP_SELF'] == '/index.php'
    &&
    ! isset($_GET)
)
{ echo 'class="white"'; }

Answer 1

You can check if $_GET is empty like this:

if(empty($_GET)) {
    // there are no GET paramas set this is index.php
} else {
    // there are GET params set
}

Answer 2

Because $_GET is a (superglobal) array, you can check with count() wether elements are set or not.

if(count($_GET) == 0) {
  // index.php
} else {
  // get params ...
}