gistfile1.php

<?php

        $parsed = parse_url($url);
        if(isset($parsed['scheme'])) {
            $scheme = $parsed['scheme'];
        } else {
            $scheme = "http";
        }
        $path = substr($parsed['path'],1);
        $parts = explode("/",$path);
        foreach($parts as $k=>$part) {
            $parts[$k] = urlencode(urldecode($part));
        }
        $url = "$scheme://{$parsed['host']}/".implode("/",$parts);