What is WordPress Reset Post Data wp_reset_postdata();

While Querying Different Posts Types in WordPress theme folder, wp_reset_postdata() is a crucial function in WordPress used to restore the global post data back to its original state after using a custom loop with WP_Query. When you create a new query using WP_Query or get_posts() in WordPress, it modifies the global $post variable to point to the first post in the new query result. This means that functions like the_title(), the_permalink(), and the_content() will display content related to the posts in the custom query instead of the main query.

However, after executing a custom loop, it’s essential to reset the global post data to avoid unintended consequences. This is where wp_reset_postdata() comes into play. It ensures that the global $post variable is restored to its original state, pointing back to the main query, so that subsequent template tags and functions correctly display content from the main loop.

Without resetting the post data, you might encounter issues such as incorrect post data being displayed or unexpected behavior in subsequent template tags. Therefore, it’s a best practice to use wp_reset_postdata() after any custom loop to maintain the integrity of the global post data and ensure consistent output throughout your WordPress templates.

wp_reset_postdata(); In short

When we use custom queries of WP, it defaults WP post object data like the_post(), the_ID(), the_permalink() & others to first custom queried post data. So, without resetting the post data, it will try to fetch the_title(), the_permalink(), & other data of default post object.

After resetting the post data of WordPress, now we can try to query another custom post.

wp_reset_postdata(); is useful if we use custom queries multiple times in a page.

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