How can PHP access the anchor tag value in a URL?

To access the anchor tag value in a URL using PHP, you can use the `$_SERVER['REQUEST_URI']` variable to get the current URL and then parse it to extract the anchor tag value. You can do this by using functions like `parse_url()` and `explode()` to separate the URL into its components and then extract the anchor tag value.

$url = $_SERVER['REQUEST_URI'];
$parts = parse_url($url);
$anchor = explode('#', $parts['fragment'])[1];
echo $anchor;