Render text based on the current language, using the primary and secondary languages.

localized-helper.php

/**
 * Render text based on the current language, using the primary and secondary languages.
 * Supports placeholders like %s.
 * @param string $primary_language The primary language text to be rendered.
 * @param string $secondary_language The secondary language text to be rendered.
 * @param mixed $args Additional arguments to replace placeholders in the text.
 */
function localized_text($primary_language, $secondary_language, ...$args) {
    // Get the current language
    $current_language = apply_filters('wpml_current_language', NULL);
    
    // Get the default (primary) language dynamically
    $default_language = apply_filters('wpml_default_language', NULL);

    // Determine the language text to use
    $text = ($current_language === $default_language) ? $primary_language : $secondary_language;

    // Replace placeholders in the text (e.g., %s) with the provided arguments
    return vsprintf($text, $args);  // vsprintf() allows for dynamic string replacement
}