int $postid, WP_Post $post )
Fires before a post is deleted, at the start of wp_delete_post() .
This hook runs:
- Just before other data associated with the post is deleted – like meta data. After the other data is deleted, the delete_post action executes, the primary post is removed, and then the deleted_post action is executed.
- When items marked for trash are going through final (forced) deletion (e.g. the trash is disabled and an item is deleted).
This hook does not run:
- For posts that are being marked as trash (unforced). The wp_trash_post hook is the functional equivalent, executed just before items are marked as trash.
- For attachments. The delete_attachment hook is the functional equivalent, executed just before posts of type attachment are processed. With attachments, exactly as with other post types, meta data is removed, the delete_post action is run, then the attachment is removed from the database, and finally, the deleted_post action is run.
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do_action( 'before_delete_post', $postid, $post );
Let’s suppose you have a plugin and when a certain post_type is deleted you want to perform some action.
It would be a good practice not to use global variables when the needed information is available in parameters because global variables can easily be broken by different context, plugins or updates. — By Teemu Suoranta —