Changing language variable in URL [duplicate]

Question

Possible Duplicate:
Replace values in a URI query string

I am using a language switcher in the navigation bar to switch between EN and DE, my url structure is like this:

http://www.mydomain.com/gallery.php?lang=de
http://www.mydomain.com/gallery-item.php?id=100&lang=de

The switch works well on all urls which don't have an id, but it doesn't work with the ids.

<?php
$url="http://".$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'];
<a href='.$url.'?lang=en">
<a href='.$url.'?lang=de">
?>

What is a good solution to check for $lang=xx or ?lang=xx and then add ?lang=xx or $lang=xx respectively?

Try to add the ? only, if $_SERVER['PHP_SELF'] is not set (this variable contains the url parameters) and add an & if it is set. :) — Stefan Fandler
– Stefan Fandler, Commented Jun 29, 2012 at 8:25

deceze · Accepted Answer · 2012-06-29 08:26:12Z

0

$params = $_GET;

$params['lang'] = 'en';
printf('<a href="%s?%s">En</a>', $url, http_build_query($params));

$params['lang'] = 'de';
printf('<a href="%s?%s">De</a>', $url, http_build_query($params));

Or even very compact:

printf('<a href="%s?%s">De</a>',
       $url, http_build_query(array('lang' => 'de') + $_GET));

http://php.net/http_build_query

answered Jun 29, 2012 at 8:26

deceze♦

525k89 gold badges807 silver badges954 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Changing language variable in URL [duplicate]

1 Answer 1

Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Linked

Related