Remove language-specifier from URL path string

Question

I am looking for someone that can help me with a regex for the following.

I have this code: (have updated it)

<?php
$sitename = "http://" .$_SERVER["SERVER_NAME"];
$sitename = mysql_real_escape_string($sitename);
$language = "da";
$language = mysql_real_escape_string($language);
$pagename = $_SERVER["PHP_SELF"];
$pagename = mysql_real_escape_string($pagename);
$language1 = preg_replace("/$language/", "$1", "$pagename");
?>

I need a regex to strip the language from the URL(sitename) - This now works

How do I escape special characters?

The result from the above example leaves me with //index.asp and not with /index.asp.

Basically, what I want to do is to strip a constant (/da) from a URL:

the URL will look like this http://www.example.com/da/ or http://www.example.com/da/folder/folder/folder/page.asp

I only need to take the da out of the URL.

How will I do this in PHP?

Ok I seemed to have figured it out:

<?php
$sitename = "http://" .$_SERVER["SERVER_NAME"];
$sitename = mysql_real_escape_string($sitename);
$language = "\/da";
$pagename = $_SERVER["PHP_SELF"];
$pagename = mysql_real_escape_string($pagename);
$language1 = preg_replace("/$language/", "$1", "$pagename");
?>

I only needed to remove this line:

 $language = mysql_real_escape_string($language);

Answer 1

Replace:

$re = '/(?:\w+:\/\/[\w][\w.]+\/)(\w+)\//ui';
or this $re = '^(?:.*)\/(\w{2})\//ui';

$text = http://www.domain.com/ru/

preg_replace($re, 'ru', $text);

--> *http://www.domain.com/ru/*

---

Search:

$re = '/(?<domain>\w+:\/\/[\w][\w.]+\/)(?<lang>\w+)\//ui';
or this $re = '^(?:.*)\/(?<lang>\w{2})\//ui';

$text = http://www.domain.com/ru/

preg_match($re, $text, $aMatches);

--> Array
(
    [0] => http://www.domain.com/da/
    [domain] => http://www.domain.com/
    [1] => http://www.domain.com/
    [lang] => da
    [2] => da
)