Convert url (contains dots) to relative - php

Question

is there any php functions, to sanitize link+path?
i.e.
http://example.com/fold1/fold2/fold3/../../././MyFile.HTML
to
http://example.com/fold1/MyFile.HTML
so, i want remove dots,but maintain the suitable(relative) correct path.

Answer 1

I've found so far, is :
echo ConvertDotedPathToNormalUrl('http://example.com/directory/.././pageee.html');
code:
function ConvertDotedPathToNormalUrl($url){
$firstType = '/(.*)\/((?:(?!\.\.).)+)\/\.\.\//si';
preg_match($firstType,$url,$result);
if (!empty($result[2])){
$url = str_replace('/'.$result[2].'/..','',$url);
if ( strstr($url,'../')){$url= ConvertDotedPathToNormalUrl($url);}
}
$url = str_replace('/./','/',$url); $url = str_replace('://','|||',$url);$url = str_replace('//','/',$url);$url = str_replace('|||','://',$url);
return $url;
}
p.s. but not, it converts

Answer 2

You can
1) get the $path using parse_url(..).
2) get the $webroot = $_SERVER['DOCUMENT_ROOT'];
3) get the $zrealpath = realpath($webroot . $path);
<?php
define ('CRLF', "<br />\n");
$url = 'http://example.com/fold1/fold2/fold3/../../././MyFile.HTML';
$parsed = parse_url($url);
echo '---- vardump($parsed):', CRLF; // for education
zvardump($parsed);
$webroot = $_SERVER['DOCUMENT_ROOT'];
echo 'webroot = ', $webroot, CRLF;
$path = $parsed['path'];
echo 'path = ', $path, CRLF;
$zrealpath = realpath($webroot . $path);
echo 'realpath = ', $zrealpath, CRLF;
function zvardump($var1) {
ob_start();
echo "<pre style=\"margin:0;\">\n";
var_dump($var1);
echo "</pre>\n";
$zoutput = ob_get_contents();
ob_end_clean();
echo str_replace("=>\n ", " => ", $zoutput);
}
?>