New plugin hooks in WordPress 3.1

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	New?	Instances
1	add_admin_bar_menus		action	YES	1
2	add_{$meta_type}_meta	note	action	YES	1
3	add_{$meta_type}_metadata	note	filter	YES	1
4	admin_bar_init		action	YES	1
5	admin_bar_menu		action	YES	1
6	admin_title		filter	YES	1
7	after_theme_row		action	YES	1
8	after_theme_row_{$theme_key}	note	action	YES	1
9	akismet_comment_nonce		filter	YES	1
10	akismet_optimize_table		filter	YES	1
11	akismet_show_user_comments_approved		filter	YES	1
12	akismet_submit_nonspam_comment		action	YES	1
13	akismet_submit_spam_comment		action	YES	1
14	all_admin_notices		action	YES	1
15	all_themes		filter	YES	1
16	bulk_actions-{$screen->id}	note	filter	YES	1
17	can_edit_network		filter	YES	1
18	comments_clauses		filter	YES	1
19	custom_header_options		action	YES	1
20	default_hidden_meta_boxes		filter	YES	1
21	delete_{$meta_type}_meta	note	action	YES	1
22	delete_{$meta_type}_metadata	note	filter	YES	1
23	doing_it_wrong_run		action	YES	1
24	doing_it_wrong_trigger_error		filter	YES	1
25	edit_profile_url		filter	YES	1
26	edit_term_link		filter	YES	1
27	enter_title_here		filter	YES	1
28	esc_textarea		filter	YES	1
29	force_filtered_html_on_import		filter	YES	1
30	get_ancestors		filter	YES	1
31	get_edit_term_link		filter	YES	1
32	get_media_item_args		filter	YES	1
33	get_meta_sql		filter	YES	1
34	get_terms_args		filter	YES	1
35	get_the_categories		filter	YES	1
36	get_the_terms		filter	YES	1
37	get_{$meta_type}_metadata	note	filter	YES	1
38	in_theme_update_message-{$theme_key}	note	action	YES	1
39	list_pages		filter	YES	1
40	load-categories-php		action	YES	1
41	load-edit-link-categories-php		action	YES	1
42	load-page-new-php		action	YES	1
43	load-page-php		action	YES	1
44	load_image_to_edit_attachmenturl		filter	YES	1
45	load_image_to_edit_filesystempath		filter	YES	1
46	login_enqueue_scripts		action	YES	1
47	login_footer		action	YES	1
48	manage_plugins_custom_column		action	YES	1
49	manage_sites_action_links		filter	YES	1
50	manage_sites_custom_column		action	YES	1
51	manage_themes_custom_column		action	YES	1
52	manage_{$post->post_type}_posts_custom_column	note	action	YES	1
53	manage_{$screen->id}_sortable_columns	note	filter	YES	1
54	manage_{$screen->taxonomy}_custom_column	note	filter	YES	1
55	mature_blog		action	YES	1
56	media_upload_mime_type_links		filter	YES	1
57	ms_user_list_site_actions		filter	YES	1
58	nav_menu_item_id		filter	YES	1
59	network_admin_edit_{$action}	note	action	YES	1
60	network_admin_menu		action	YES	1
61	network_admin_notices		action	YES	1
62	network_sites_updated_message_{$action}	note	filter	YES	1
63	network_site_users_after_list_table		action	YES	1
64	posts_clauses		filter	YES	1
65	posts_clauses_request		filter	YES	1
66	post_comment_status_meta_box-options		action	YES	1
67	post_format_rewrite_base		filter	YES	1
68	post_type_archive_feed_link		filter	YES	1
69	post_type_archive_link		filter	YES	1
70	post_type_archive_title		filter	YES	1
71	pre_get_comments		action	YES	1
72	pre_user_query		action	YES	1
73	schedule_event		filter	YES	1
74	secure_auth_cookie		filter	YES	1
75	secure_auth_redirect		filter	YES	1
76	secure_logged_in_cookie		filter	YES	1
77	secure_signon_cookie		filter	YES	1
78	show_admin_bar		filter	YES	1
79	show_network_site_users_add_existing_form		filter	YES	1
80	show_network_site_users_add_new_form		filter	YES	1
81	show_recent_comments_widget_style		filter	YES	1
82	single_term_title		filter	YES	1
83	swfupload_post_params		filter	YES	1
84	swfupload_success_handler		filter	YES	1
85	terms_clauses		filter	YES	1
86	theme_action_links_{$theme_key}	note	filter	YES	1
87	theme_row_meta		filter	YES	1
88	the_comments		filter	YES	1
89	tiny_mce_preload_dialogs		action	YES	1
90	twentyten_attachment_height		filter	YES	1
91	unmature_blog		action	YES	1
92	update_{$meta_type}_metadata	note	filter	YES	1
93	user_admin_menu		action	YES	1
94	user_admin_notices		action	YES	1
95	user_admin_url		filter	YES	1
96	user_dashboard_url		filter	YES	1
97	use_default_gallery_style		filter	YES	1
98	views_{$screen->id}	note	filter	YES	1
99	wp_admin_bar_class		filter	YES	1
100	wp_after_admin_bar_render		action	YES	1
101	wp_before_admin_bar_render		action	YES	1
102	wp_get_current_commenter		filter	YES	1
103	wp_insert_post_parent		filter	YES	1
104	wp_nav_menu_objects		filter	YES	1
105	wp_network_dashboard_setup		action	YES	1
106	wp_network_dashboard_widgets		filter	YES	1
107	wp_unique_post_slug_is_bad_attachment_slug		filter	YES	1
108	wp_unique_post_slug_is_bad_flat_slug		filter	YES	1
109	wp_unique_post_slug_is_bad_hierarchical_slug		filter	YES	1
110	wp_update_term_parent		filter	YES	1
111	wp_user_dashboard_setup		action	YES	1
112	wp_user_dashboard_widgets		filter	YES	1
113	wp_xmlrpc_server_class		filter	YES	1
114	_network_admin_menu		action	YES	1
115	_user_admin_menu		action	YES	1
116	{$permastructname}_rewrite_rules	note	filter	YES	1
117	{$prefix}plugin_action_links	note	filter	YES	1
118	{$prefix}plugin_action_links_{$plugin_file}	note	filter	YES	1

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.