עשיתי בדיוק כמו במדריך ואני מקבל שגיאות
Notice: Use of undefined constant LC_MESSAGES - assumed 'LC_MESSAGES' in D:\wamp\www\startup\index.php on line 13
Deprecated: setlocale(): Passing locale category name as string is deprecated. Use the LC_* -constants instead in D:\wamp\www\startup\index.php on line 13
Warning: setlocale(): Invalid locale category name LC_MESSAGES, must be one of LC_ALL, LC_COLLATE, LC_CTYPE, LC_MONETARY, LC_NUMERIC, or LC_TIME in D:\wamp\www\startup\index.php on line 13

זאת השורה:
setlocale(LC_MESSAGES, $locale);