FortunyShop

Problem:

Cart items are not synced between languages with custom lang switcher.

Solution:

The user is tweaking our code example from WPML's documentation here.

https://wpml.org/documentation/getting-started-guide/language-setup/custom-language-switcher/#language-selector-with-flags-only

If your site is set to 'A different domain per language' Language URL format, then this code example will not sync the cart's content when you switch the language. But only by adding a class (wpml-ls-item) the element that holds the language's link, the issue is solved. This is the corrected code example.

function language_selector_flags(){
    $languages = icl_get_languages('skip_missing=0&orderby=code');
    if(!empty($languages)){
        foreach($languages as $l){
            if(!$l['active']) echo '<a class="wpml-ls-item" href="'.$l['url'].'">';
            echo '<img src="'.$l['country_flag_url'].'" height="12" alt="'.$l['language_code'].'" width="18" />';
            if(!$l['active']) echo '</a>';
        }
    }
}

Relevant Documentation:

https://wpml.org/documentation/getting-started-guide/language-setup/custom-language-switcher/