语言翻译文件PHP-自动

Question

我如何自动将非常多的值转换为其他语言

例如：

en.php

$lang['activities'] = 'Activities';
$lang['add_item'] = 'Add Item';
$lang['add_payment'] = 'Add Payment';
$lang['add_task'] = 'Add Task';

到

de.php

$lang['activities'] = 'New Translation';
$lang['add_item'] = 'New Translation';
$lang['add_payment'] = 'New Translation';
$lang['add_task'] = 'New Translation';

谢谢