How to get the full URL of the current page in PHP?

Hello everyone! I'm a beginner in PHP and trying to write a simple logging system that records which page a user visits the site from. I need to get the full URL of the current page, including the protocol (http/https), domain, and all GET parameters. I tried using `$_SERVER['REQUEST_URI']`, but it only returns the path, for example `/page.php?id=123`. But I need something like `https://mysite.com/page.php?id=123`. I tried combining it with `$_SERVER['HTTP_HOST']`, but in some cases I get errors, especially when the site is running over HTTPS. Here is my current code: ```php $url = 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']; ``` The problem is that: 1. HTTPS is not taken into account 2. Sometimes `HTTP_HOST` is missing or contains a port 3. On the local server (OpenSer