New plugin hooks in WordPress 1.5.2

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_category		action	YES	1
2	admin_menu		action	YES	1
3	all_options		filter	YES	1
4	author_feed_link		filter	YES	1
5	author_link		filter	YES	1
6	author_rewrite_rules		filter	YES	1
7	category_feed_link		filter	YES	1
8	category_link		filter	YES	1
9	category_rewrite_rules		filter	YES	1
10	category_save_pre		filter	YES	1
11	category_template		filter	YES	1
12	check_admin_referer		action	YES	1
13	check_passwords		action	YES	1
14	comments_number		filter	YES	1
15	comments_popup_template		filter	YES	1
16	comments_rewrite_rules		filter	YES	1
17	comments_template		filter	YES	1
18	comment_author_rss		filter	YES	1
19	comment_closed		action	YES	1
20	comment_content_presave		filter	YES	1
21	comment_edit_pre		filter	YES	1
22	comment_flood_trigger		action	YES	1
23	comment_form		action	YES	1
24	comment_id_not_found		action	YES	1
25	comment_moderation_subject		filter	YES	1
26	comment_moderation_text		filter	YES	1
27	comment_notification_headers		filter	YES	1
28	comment_notification_subject		filter	YES	1
29	comment_notification_text		filter	YES	1
30	comment_on_draft		action	YES	1
31	comment_save_pre		filter	YES	1
32	comment_text_rss		filter	YES	1
33	content_edit_pre		filter	YES	1
34	content_save_pre		filter	YES	1
35	core_files_loaded		action	YES	1
36	date_rewrite_rules		filter	YES	1
37	day_link		filter	YES	1
38	default_content		filter	YES	1
39	default_excerpt		filter	YES	1
40	default_title		filter	YES	1
41	delete_category		action	YES	1
42	edit_form_advanced		action	YES	1
43	edit_page_form		action	YES	1
44	excerpt_edit_pre		filter	YES	1
45	excerpt_save_pre		filter	YES	1
46	feed_link		filter	YES	1
47	generate_rewrite_rules		action	YES	1
48	get_comments_number		filter	YES	1
49	get_comment_author		filter	YES	1
50	get_comment_author_email		filter	YES	1
51	get_comment_author_IP		filter	YES	1
52	get_comment_author_link		filter	YES	1
53	get_comment_author_url		filter	YES	1
54	get_comment_author_url_link		filter	YES	1
55	get_comment_date		filter	YES	1
56	get_comment_excerpt		filter	YES	1
57	get_comment_ID		filter	YES	1
58	get_comment_text		filter	YES	1
59	get_comment_time		filter	YES	1
60	get_comment_type		filter	YES	1
61	get_the_excerpt		filter	YES	1
62	get_the_guid		filter	YES	1
63	get_the_time		filter	YES	1
64	home_template		filter	YES	1
65	init		action	YES	1
66	link_rating		filter	YES	1
67	list_cats_exclusions		filter	YES	1
68	locale		filter	YES	1
69	loginout		filter	YES	1
70	lost_password		action	YES	1
71	manage_posts_columns		filter	YES	1
72	manage_posts_custom_column		action	YES	1
73	mod_rewrite_rules		filter	YES	1
74	month_link		filter	YES	1
75	name_save_pre		filter	YES	1
76	option_{$setting}	note	filter	YES	1
77	page_link		filter	YES	1
78	page_rewrite_rules		filter	YES	1
79	page_template		filter	YES	1
80	parse_query		action	YES	1
81	password_reset		action	YES	1
82	pingback_post		action	YES	1
83	plugins_loaded		action	YES	1
84	posts_join		filter	YES	1
85	posts_join_paged		filter	YES	1
86	posts_orderby		filter	YES	1
87	posts_where		filter	YES	1
88	posts_where_paged		filter	YES	1
89	post_comments_feed_link		filter	YES	1
90	post_link		filter	YES	1
91	post_rewrite_rules		filter	YES	1
92	preprocess_comment		filter	YES	1
93	pre_comment_approved		filter	YES	1
94	pre_comment_author_email		filter	YES	1
95	pre_comment_author_name		filter	YES	1
96	pre_comment_author_url		filter	YES	1
97	pre_comment_content		filter	YES	1
98	pre_comment_user_agent		filter	YES	1
99	pre_comment_user_domain		filter	YES	1
100	pre_comment_user_ip		filter	YES	1
101	pre_option_{$option->option_name}	note	filter	YES	1
102	pre_user_id		filter	YES	1
103	private_to_published		action	YES	1
104	query_string		filter	YES	1
105	query_vars		filter	YES	1
106	register		filter	YES	1
107	retreive_password		action	YES	1
108	retrieve_password		action	YES	1
109	rewrite_rules		filter	YES	1
110	rewrite_rules_array		filter	YES	1
111	root_rewrite_rules		filter	YES	1
112	save_post		action	YES	1
113	search_rewrite_rules		filter	YES	1
114	show_password_fields		filter	YES	1
115	simple_edit_form		action	YES	1
116	status_save_pre		filter	YES	1
117	stylesheet		filter	YES	1
118	stylesheet_directory		filter	YES	1
119	stylesheet_directory_uri		filter	YES	1
120	stylesheet_uri		filter	YES	1
121	switch_theme		action	YES	1
122	template		filter	YES	1
123	template_directory		filter	YES	1
124	template_directory_uri		filter	YES	1
125	template_redirect		action	YES	1
126	theme_root		filter	YES	1
127	theme_root_uri		filter	YES	1
128	the_author_email		filter	YES	1
129	the_permalink		filter	YES	1
130	the_posts		filter	YES	1
131	title_edit_pre		filter	YES	1
132	title_save_pre		filter	YES	1
133	user_register		action	YES	1
134	wp_authenticate		action	YES	1
135	wp_blacklist_check		action	YES	1
136	wp_footer		action	YES	1
137	wp_list_pages		filter	YES	1
138	wp_login		action	YES	1
139	wp_logout		action	YES	1
140	wp_meta		action	YES	1
141	wp_set_comment_status		action	YES	1
142	xmlrpc_methods		filter	YES	1
143	year_link		filter	YES	1
144	{$page_hook}	note	action	YES	1
145	{$type}_template	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.