What are some strategies for organizing language files in PHP to avoid redundancy and make translation management more efficient, especially for global text elements like buttons or common phrases?

To avoid redundancy and make translation management more efficient for global text elements in PHP, one strategy is to use language files with key-value pairs for each translation. By organizing these language files into separate files for each language and then including them in your PHP code as needed, you can easily manage and update translations without duplicating text across multiple files.

// English language file (en.php)
$lang['button_submit'] = 'Submit';
$lang['button_cancel'] = 'Cancel';
$lang['common_hello'] = 'Hello';

// Spanish language file (es.php)
$lang['button_submit'] = 'Enviar';
$lang['button_cancel'] = 'Cancelar';
$lang['common_hello'] = 'Hola';

// Include the appropriate language file based on user selection
$user_language = 'en'; // Example: user selects English
include_once($user_language . '.php');

// Usage in PHP code
echo $lang['button_submit']; // Output: Submit
echo $lang['common_hello']; // Output: Hello