How to normalize a web URL (also removes the schema)

composer.json

{
	"require": {
		"glenscott/url-normalizer" : "dev-master"
	}
}

normalize_url.php

function normalizeUrl($url)
{
	$normalizer = new URL\Normalizer;
	$normalizer->setUrl($url);
	$url = $normalizer->normalize();

	extract((array) parse_url($url) + array(
		'host' => '',
		'path' => '',
		'query' => ''
	));

	$path = ltrim($path, '/');

	if($host AND ($path OR $query)) {
		$host .= '/';
	}

	return $host . $path . ($query ? "?$query" : '');
}

normalize_url_tests.php

<?php

require('vendor/autoload.php');

$urls = 'HTTP://www.Example.com/
http://www.example.com/
http://www.example.com/a%c2%b1b
http://www.example.com/a%C2%B1b
http://www.example.com/%7Eusername/
http://www.example.com/~username/
http://www.example.com
http://www.example.com/
http://www.example.com:80/bar.html
http://www.example.com/bar.html
http://www.example.com/../a/b/../../c/./d.html
http://www.example.com/../a/b/../c/./d.html
http://www.example.com/a/c/d.html
http://www.example.com/../a/b/../c/./d.html
http://www.example.com/a/c/d.html
//www.example.com/path?googleguy=googley
www.example.com/path
http://www.example.com/?array[key]=value
http://www.example.com/?array%5Bkey%5D=value
http://example.com/url=http://site.com&value=sure
';

$urls = explode("\n", $urls);


function standardizeUrl($url)
{
	extract((array) parse_url($url) + array(
		'schema' => 'http',
		'host' => '',
		'path' => '',
		'query' => ''
	));

	// example.com/path and //example.com/js.js have problems
	/*if( ! $host) {

		if(strpos($url, '/') === false) {
			return;
		}

		list($host, $foo) = explode('/', ltrim($url, '/'), 2);
	}
	*/

	if($host) { $host .= '/'; }

	//print 'Host: ' . $host . PHP_EOL;

	if($path = trim($path, '/')) {

		$path = rawurlencode(rawurldecode(trim($path, '/')));

        $path = str_replace(
        	array('%2F', '%3A', '%40', '/./'),
        	array('/', ':', '@', '/'),
        	$path
        );

        if($path) {

        	// Remove /foo/../
        	while(($new = preg_replace('~((?!\.\.|/).)+/\.\./~', '', $path)) !== $path) {
        		$path = $new;
        	}

        	// Remove starting ../
        	while(substr($path, 0, 3) == '../') {
        		$path = substr($path, 3);
        	}
        }
	}

	//print "\t$schema - $host\n";
	return strtolower("$schema://$host") . $path . ($query ? "?$query" : '');
}


function normalizeUrl($url)
{
	$normalizer = new URL\Normalizer;
	$normalizer->setUrl($url);
	$url = $normalizer->normalize();

	extract((array) parse_url($url) + array(
		'host' => '',
		'path' => '',
		'query' => ''
	));

	$path = ltrim($path, '/');

	if($host AND ($path OR $query)) {
		$host .= '/';
	}

	return $host . $path . ($query ? "?$query" : '');
}


$normalizer = new URL\Normalizer;

$end_me = array();
$end_me2 = array();
$end_normalize = array();
foreach($urls as $url) {
	
	print "$url\n";

	$start = microtime(TRUE);
	print "" . standardizeUrl($url) . "\n";
	$end_me[] = (microtime(TRUE) - $start);

	$start = microtime(TRUE);
	print "" . normalizeUrl($url) . "\n";
	$end_me2[] = (microtime(TRUE) - $start);


	$start = microtime(TRUE);
	$normalizer->setUrl($url);
	print "" . $normalizer->normalize() . "\n\n";
	$end_normalize[] = (microtime(TRUE) - $start);
}

print array_sum($end_me) . ' = ' . (array_sum($end_me) / count($end_me)) . "\n";
print array_sum($end_me2) . ' = ' . (array_sum($end_me2) / count($end_me2)) . "\n";
print array_sum($end_normalize) . ' = ' . (array_sum($end_normalize) / count($end_normalize)) . "\n";

output.txt

HTTP://www.Example.com/
http://www.example.com/
www.example.com
http://www.example.com/

http://www.example.com/
http://www.example.com/
www.example.com
http://www.example.com/

http://www.example.com/a%c2%b1b
http://www.example.com/a%C2%B1b
www.example.com/a%C2%B1b
http://www.example.com/a%C2%B1b

http://www.example.com/a%C2%B1b
http://www.example.com/a%C2%B1b
www.example.com/a%C2%B1b
http://www.example.com/a%C2%B1b

http://www.example.com/%7Eusername/
http://www.example.com/~username
www.example.com/~username/
http://www.example.com/~username/

http://www.example.com/~username/
http://www.example.com/~username
www.example.com/~username/
http://www.example.com/~username/

http://www.example.com
http://www.example.com/
www.example.com
http://www.example.com/

http://www.example.com/
http://www.example.com/
www.example.com
http://www.example.com/

http://www.example.com:80/bar.html
http://www.example.com/bar.html
www.example.com/bar.html
http://www.example.com/bar.html

http://www.example.com/bar.html
http://www.example.com/bar.html
www.example.com/bar.html
http://www.example.com/bar.html

http://www.example.com/../a/b/../../c/./d.html
http://www.example.com/c/d.html
www.example.com/c/d.html
http://www.example.com/c/d.html

http://www.example.com/../a/b/../c/./d.html
http://www.example.com/a/c/d.html
www.example.com/a/c/d.html
http://www.example.com/a/c/d.html

http://www.example.com/a/c/d.html
http://www.example.com/a/c/d.html
www.example.com/a/c/d.html
http://www.example.com/a/c/d.html

http://www.example.com/../a/b/../c/./d.html
http://www.example.com/a/c/d.html
www.example.com/a/c/d.html
http://www.example.com/a/c/d.html

http://www.example.com/a/c/d.html
http://www.example.com/a/c/d.html
www.example.com/a/c/d.html
http://www.example.com/a/c/d.html

//www.example.com/path?googleguy=googley
http://www.example.com/path?googleguy=googley
www.example.com/path?googleguy=googley
//www.example.com/path?googleguy=googley

www.example.com/path
http://www.example.com/path
www.example.com/path
www.example.com/path

http://www.example.com/?array[key]=value
http://www.example.com/?array[key]=value
www.example.com/?array%5Bkey%5D=value
http://www.example.com/?array%5Bkey%5D=value

http://www.example.com/?array%5Bkey%5D=value
http://www.example.com/?array%5Bkey%5D=value
www.example.com/?array%5Bkey%5D=value
http://www.example.com/?array%5Bkey%5D=value

http://example.com/url=http://site.com&value=sure
http://example.com/url%3Dhttp://site.com%26value%3Dsure
example.com/url=http://site.com&value=sure
http://example.com/url=http://site.com&value=sure


http://



0.0015895366668701 = 7.569222223191E-5
0.0075552463531494 = 0.00035977363586426
0.0063259601593018 = 0.00030123619806199