$_SERVER['DOCUMENT_ROOT'] platform differences

[Locker]

I've noticed that whilst developing on a Windows XP machine with WAMP, $_SERVER['DOCUMENT_ROOT'] returns "/dir/path/". However, on my Unix servers it returns "/dir/path" (no trailing slash).

This becomes a problem as something like the following:

require($_SERVER['DOCUMENT_ROOT'] . "/header.php");

Works on the Unix server, but not in Windows...

Is this a commonly known difference and what's the best way to get around it?

[SJH]

The following code will strip the trailing slash off the end of the path if there is one. If not, it'll leave it alone:

$dir = rtrim($_SERVER['DOCUMENT_ROOT'], '/');

require $dir . '/header.php';