Different Logo for different languages

i do not know if polylang has some classes on body for each language – but on htm there is that lang attribut you can check.
you then can use a filter to change logo with an if clause checking for lang:

function change_logo_by_lang($logo){
  $currentlang = get_bloginfo('language');
  if($currentlang=="en-GB"){
    $logo = "/wp-content/uploads/YOUR_LOGO_FILE.jpg";
  }
  return $logo;
}
add_filter('avf_logo','change_logo_by_lang');

by that you can even differ on f.e.: en-US, en-CA, en-AU, en-GB, en-UK

I for one test almost all my advice beforehand.
So as long as you have a lang attribute to html, it should work.
As I said – I don’t have Polylang running on a test installation, so I don’t know how Polylang switches between languages, but I can’t imagine the lang attribute not being set. WPML does it that way, anyway.

The lang attributes can be determined using the developer tools, and the path to the alternative logo must of course be replaced.
If you use transparent headers, which you didn’t mention, you won’t see the actual logo at the beginning.

if you try to substitute the transparency logo on some pages use

function replace_transparent_logo_on_some_pages($header){
    $currentlang = get_bloginfo('language');
    if($currentlang=="de-DE"){
        $header['header_replacement_logo'] = "/wp-content/uploads/YOUR_ALTERNATE_LOGO";
    }
    return $header; 
}
add_filter('avf_header_setting_filter','replace_transparent_logo_on_some_pages');

i tested this – but if there is set on “Transparency Options” a svg as logo – this will not replace this. It seems that the replacement of the img svg to an inline svg hampers that filter from changing the output.

Guenni007 is a real asset..:)

Hi,
I am using polylang for de and en pages and everything works fine, BUT:

Clicking on the LOGO on any english page I get a wrong link to the english HOME. (The HOME-button in the menu works fine.)
How can I change the LOGO-Link on my english pages leading me to my english HOME page?

Hi Guenni, Hi Yigit,

Now it works! Thanks for your perfect and fast support.
No idea what went wrong before.

Best,
Markus