Yep! That’s how I roll with includes, works a treat! You can still do usual paths beginning with / for CSS/JS but PHP/Apache use the full document root, rather than relevant to the URL.
So for example if you had your stylesheet linked as ‘/css/styles.css’ – this would work fine as it’s going “http://domain.com/css/styles.css”.
However, because PHP can see the whole route, your path is actually the file/folder path of the server. So “/css/styles.php” would go all the way back to the OS structure, for example if your site was at “/var/www/sitex/live_site/index.php” it would go back to before /var looking for that file.
So $_SERVER tells PHP to look in /var/www/sitex/live_site/ and thusly finds your file!
It took me forever to work that out when I first started messing around with PHP includes!
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