TranslatePress custom language switcher

translatepress-custom-language-switcher.php

<?php
// Custom language switcher for TranslatePress

$trp = TRP_Translate_Press::get_trp_instance();
$trp_url = $trp->get_component( 'url_converter' );
$trp_settings = $trp->get_component( 'settings' )->get_settings();

// Get all published languages
$lang = $trp_settings['publish-languages'];

// Prepare empty html output array.
$output = array();

// Loop over the pusblished languages
foreach ( $lang as $key => $value ) {
  
  // Add .active class if language is the current language.
  $class_list;
  if ($current_language = get_locale() == $value ) {
    $class_list = 'active';
  }
  
  // Prepare the anchor tag html. Uses the language slug as front-end name.
  $output[] = '<a class="'.$class_list.'" href="'.$trp_url->get_url_for_language( $value, false ).'">'. strtoupper($trp_url->get_url_slug( $value, false )) .'</a>';

  // Reset class list for next item.
  $class_list = '';
}
// Echo with a slash inbetween the language options NL/EN
echo implode(" / ", $output);

?>