How to Set the lang Attribute Dynamically in WordPress with ACF

Learn how to dynamically set the HTML lang attribute in WordPress using an Advanced Custom Fields (ACF) value. This step-by-step tutorial will guide you through configuring ACF, mapping languages to their proper ISO codes, and writing PHP code to ensure the lang attribute reflects the language of your content dynamically.

This technique is particularly useful for websites that feature multilingual content without direct one-to-one translations. For example, if your site contains articles in multiple languages that cater to diverse audiences, dynamically setting the lang attribute helps improve accessibility and user experience. It ensures browsers and assistive technologies interpret the content correctly, and it boosts your SEO by signaling the content’s language to search engines.

By implementing this approach, you can enhance your site’s localization capabilities without requiring separate pages or translations for every language. Whether you're managing a blog, news portal, or knowledge base with mixed-language content, this solution can save time while keeping your site user-friendly and search engine optimized.

If you're a developer or site administrator looking to fine-tune your WordPress website for better multilingual support, this tutorial is for you. Follow along and take your WordPress skills to the next level.

Link to code snippet:
https://github.com/webfar/Lang-attrib...

Link to language and country codes:
https://docs.oracle.com/cd/E13214_01/...