Deprecated plugin hooks in WordPress 5.8

Important! Some WordPress hooks get applied in multiple PHP files. If you are trying to figure out what a specific WordPress hook does, sort the table by "hook" and make sure you are looking in all the files where it occurs.

• To sort the table, click on a column title.
• Click a hook name to see details about the hook.
• Click a file name to see only hooks used in that file.

	Hook		Type	Renamed?
1	allowed_block_types		filter	DEPRECATED
2	block_categories		filter	DEPRECATED
3	block_editor_preload_paths		filter	DEPRECATED
4	block_editor_settings		filter	DEPRECATED
5	user_confirmed_action_email_content		filter	DEPRECATED
6	user_erasure_complete_email_headers		filter	DEPRECATED
7	user_erasure_complete_email_subject		filter	DEPRECATED
8	{$tag}	note	action	DEPRECATED
9	{$tag}	note	filter	DEPRECATED

Important warning about variable hooks

Some hooks have variables in their names. For example, pre_${taxonomy}_$field and admin_head- both have variable names. In general, any hook that ends (or begins) with - or _, or contains a $, has a variable name. Since the syntax with which these variables are defined may change from version to version, this page may think that a hook is deprecated (or new) even if it is not. You can usually catch this sort of thing by comparing this hook to the list of "related hooks" below.