---
title: 'Consider using mb_* functions when working with localized strings'
tweet_id: '1464247627696918528'
thread_slug: weekly-thread-2021-47
author_username: jbrooksuk
images:
    - 'https://pbs.twimg.com/media/FEzpA84X0AALH07.jpg'
created_at: 2021-11-26T15:00:13+00:00
slug: consider-using-mb-functions-when-working-with-localized-strings
---
Not sure on the difference between "strtoupper" and "mb_strtoupper"? #PHP