PHP: building a URL path

Question

I have a few strings to combine to build a full path. e.g.

$base = "http://foo.com";
$subfolder = "product/data";
$filename = "foo.xml";

// How to do this?
$url = append_url_parts($base, $subfolder, $filename); ???

String concatenation won't do, that would omit the necessary forward slashes.

In Win32 I'd use PathCombine() or PathAppend(), which would handle adding any necessary slashes between strings, without doubling them up. In PHP, what should I use?

Answer 1

Try this:

$base = "http://foo.com";
$subfolder = "product/data";
$filename = "foo.xml";

function stripTrailingSlash(&$component) {
    $component = rtrim($component, '/');
}
$array = array($base, $subfolder, $filename);
array_walk_recursive($array, 'stripTrailingSlash'); 
$url = implode('/', $array);