PHP - 从URL中删除最后一个目录

Question

Lets say my URL is:

http://www.example.com/news/media-centre/news/17/an-example-news-post/?foo=bar

I want to in PHP remove the last directory in the URL so I get:

http://www.example.com/news/media-centre/news/17/?foo=bar

How do I do this while making sure I maintain any other URL parameters?

I've tried using this:

$url = parse_url( $url );
$url['path'] = str_replace( strrchr($url['path'], "/"), "", $url['path'] );

But the replace would cause issues if the last directory is also somewhere else in the path too.

Not to mention stitching the URL back together seems like a long way round...

Answer 1

$url = "http://www.example.com/news/media-centre/news/17/an-example-news-post/?foo=bar";
$info = parse_url($url);
$info["path"]=dirname($info["path"]);

$new_url = $info["proto"]."://".$info["host"].$info["path"];
if(!empty($info["query"])) $new_url .= "?".$info["query"];
if(!empty($info["fragment"])) $new_url .= "#".$info["fragment"];