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All plugin hooks in WordPress 2.1

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 activate_{$plugin} note action no 1
2 activity_box_end action no 1
3 add_attachment action no 1
4 add_category action no 1
5 add_category_form_pre action YES 1
6 add_link action no 1
7 add_ping filter no 1
8 admin_footer action no 2
9 admin_head action no 1
10 admin_head-{$page_hook} note action YES 1
11 admin_head-{$plugin_page} note action YES 1
12 admin_menu action no 1
13 admin_notices action no 1
14 admin_print_scripts action YES 2
15 admin_print_scripts-{$page_hook} note action YES 1
16 admin_print_scripts-{$plugin_page} note action YES 1
17 all_options filter no 1
18 atom_entry action no 1
19 atom_head action no 1
20 atom_ns action no 1
21 attachment_icon filter no 1
22 attachment_innerHTML filter no 1
23 attachment_link filter no 1
24 attachment_max_dims filter no 1
25 attribute_escape filter no 1
26 author_email filter no 1
27 author_feed_link filter no 1
28 author_link filter no 1
29 author_rewrite_rules filter no 1
30 autosave_interval filter YES 2
31 bloginfo filter no 1
32 bloginfo_rss filter YES 1
33 bloginfo_url filter no 1
34 blog_privacy_selector action YES 1
35 category_description filter no 2
36 category_feed_link filter no 1
37 category_link filter no 1
38 category_rewrite_rules filter no 1
39 category_save_pre filter no 2
40 category_template filter no 1
41 cat_id_filter filter YES 1
42 cat_rows filter YES 1
43 check_admin_referer action no 1
44 check_ajax_referer action YES 1
45 check_passwords action no 1
46 commentrss2_item action YES 1
47 comments_array filter YES 1
48 comments_number filter no 1
49 comments_popup_template filter no 1
50 comments_rewrite_rules filter no 1
51 comments_template filter no 1
52 comment_author filter no 1
53 comment_author_rss filter no 1
54 comment_closed action no 1
55 comment_edit_pre filter no 1
56 comment_edit_redirect filter no 1
57 comment_email filter no 1
58 comment_excerpt filter no 1
59 comment_flood_filter filter YES 1
60 comment_flood_trigger action no 1
61 comment_form action no 4
62 comment_id_not_found action no 1
63 comment_moderation_subject filter no 1
64 comment_moderation_text filter no 1
65 comment_notification_headers filter no 1
66 comment_notification_subject filter no 1
67 comment_notification_text filter no 1
68 comment_on_draft action no 1
69 comment_post action no 1
70 comment_post_redirect filter no 1
71 comment_save_pre filter no 1
72 comment_status_pre filter no 2
73 comment_text filter no 2
74 comment_text_rss filter no 1
75 comment_url filter no 1
76 content_edit_pre filter no 2
77 content_filtered_save_pre filter no 2
78 content_save_pre filter no 4
79 create_category action no 1
80 create_user_query filter no 1
81 cron_schedules filter YES 1
82 date_rewrite_rules filter no 1
83 day_link filter no 2
84 dbx_page_advanced action no 1
85 dbx_page_sidebar action no 1
86 dbx_post_advanced action no 1
87 dbx_post_sidebar action no 1
88 deactivate_{$plugin} note action no 1
89 default_content filter no 1
90 default_excerpt filter no 1
91 default_title filter no 1
92 delete_attachment action no 1
93 delete_category action no 1
94 delete_comment action no 1
95 delete_link action no 1
96 delete_post action no 1
97 delete_user action no 1
98 do_robots action YES 2
99 do_robotstxt action YES 1
100 edit_attachment action no 1
101 edit_category action no 5
102 edit_category_form action YES 1
103 edit_category_form_pre action YES 1
104 edit_comment action no 1
105 edit_form_advanced action no 1
106 edit_link action no 1
107 edit_page_form action no 1
108 edit_post action no 2
109 edit_user_profile action no 1
110 excerpt_edit_pre filter no 1
111 excerpt_save_pre filter no 2
112 explain_nonce_{$verb}-{$noun} note filter YES 1
113 feed_link filter no 1
114 format_to_edit filter no 1
115 format_to_post filter no 1
116 found_posts filter YES 1
117 found_posts_query filter YES 1
118 generate_rewrite_rules action no 1
119 gettext filter no 2
120 get_attached_file filter YES 1
121 get_bookmarks filter YES 2
122 get_categories filter YES 1
123 get_category filter no 1
124 get_comments_number filter no 1
125 get_comment_author filter no 1
126 get_comment_author_email filter no 1
127 get_comment_author_IP filter no 1
128 get_comment_author_link filter no 1
129 get_comment_author_url filter no 1
130 get_comment_author_url_link filter no 1
131 get_comment_date filter no 1
132 get_comment_excerpt filter no 1
133 get_comment_ID filter no 1
134 get_comment_text filter no 1
135 get_comment_time filter no 1
136 get_comment_type filter no 1
137 get_editable_authors filter no 1
138 get_enclosed filter no 1
139 get_footer action YES 1
140 get_header action YES 1
141 get_next_post_join filter YES 1
142 get_next_post_sort filter YES 1
143 get_next_post_where filter YES 1
144 get_others_drafts filter no 1
145 get_pages filter YES 2
146 get_previous_post_join filter YES 1
147 get_previous_post_sort filter YES 1
148 get_previous_post_where filter YES 1
149 get_pung filter no 1
150 get_the_excerpt filter no 1
151 get_the_guid filter no 1
152 get_the_modified_date filter YES 1
153 get_the_modified_time filter no 2
154 get_the_time filter no 2
155 get_to_ping filter no 1
156 get_users_drafts filter no 1
157 home_template filter no 1
158 icon_dir filter no 2
159 icon_dir_uri filter no 1
160 init action no 1
161 js_escape filter no 1
162 kubrick_header_color filter no 1
163 kubrick_header_display filter no 1
164 kubrick_header_image filter no 1
165 link_rating filter no 1
166 list_cats filter no 4
167 list_cats_exclusions filter no 1
168 load-{$pagenow} note action YES 1
169 load-{$page_hook} note action YES 1
170 load-{$plugin_page} note action YES 1
171 locale filter no 2
172 locale_stylesheet_uri filter YES 1
173 loginout filter no 1
174 login_errors filter YES 1
175 login_form action YES 1
176 login_head action YES 1
177 login_headertitle filter YES 1
178 login_headerurl filter YES 1
179 login_message filter YES 1
180 loop_end action no 1
181 loop_start action no 1
182 lostpassword_form action YES 1
183 lostpassword_post action YES 1
184 lost_password action no 1
185 manage_link_columns filter YES 1
186 manage_link_custom_column action YES 1
187 manage_posts_columns filter no 1
188 manage_posts_custom_column action no 1
189 mce_browsers filter no 1
190 mce_buttons filter no 1
191 mce_buttons_2 filter no 1
192 mce_buttons_3 filter no 1
193 mce_css filter YES 1
194 mce_options action no 1
195 mce_plugins filter no 1
196 mce_valid_elements filter no 1
197 mod_rewrite_rules filter no 1
198 month_link filter no 2
199 name_save_pre filter no 2
200 option_{$setting} note filter no 1
201 page_link filter no 1
202 page_rewrite_rules filter no 1
203 page_template filter no 1
204 parse_query action no 2
205 parse_request action YES 1
206 password_reset action no 1
207 personal_options_update action no 1
208 phone_content filter no 1
209 pingback_post action no 1
210 ping_status_pre filter no 2
211 plugins_loaded action no 1
212 postmeta_form_limit filter YES 1
213 posts_distinct filter YES 1
214 posts_fields filter YES 1
215 posts_groupby filter no 1
216 posts_join filter no 1
217 posts_join_paged filter no 1
218 posts_orderby filter no 1
219 posts_request filter no 1
220 posts_where filter no 1
221 posts_where_paged filter no 1
222 post_comments_feed_link filter no 1
223 post_limits filter YES 1
224 post_link filter no 2
225 post_mime_type_pre filter no 1
226 post_rewrite_rules filter no 1
227 prepend_attachment filter no 1
228 preprocess_comment filter no 1
229 preview_page_link filter YES 1
230 preview_post_link filter no 1
231 pre_category_description filter no 1
232 pre_category_name filter no 1
233 pre_category_nicename filter no 1
234 pre_comment_approved filter no 1
235 pre_comment_author_email filter no 2
236 pre_comment_author_name filter no 2
237 pre_comment_author_url filter no 2
238 pre_comment_content filter no 1
239 pre_comment_user_agent filter no 1
240 pre_comment_user_ip filter no 1
241 pre_get_posts action no 1
242 pre_link_description filter no 1
243 pre_link_image filter no 1
244 pre_link_name filter no 1
245 pre_link_notes filter no 1
246 pre_link_rel filter no 1
247 pre_link_rss filter no 1
248 pre_link_target filter no 1
249 pre_link_url filter no 1
250 pre_option_{$option->option_name} note filter no 1
251 pre_ping action no 1
252 pre_upload_error filter YES 1
253 pre_user_description filter no 1
254 pre_user_display_name filter no 1
255 pre_user_email filter no 1
256 pre_user_first_name filter no 1
257 pre_user_id filter no 1
258 pre_user_last_name filter no 1
259 pre_user_login filter no 2
260 pre_user_nicename filter no 1
261 pre_user_nickname filter no 1
262 pre_user_url filter no 1
263 private_to_published action no 1
264 profile_personal_options action no 1
265 profile_update action no 1
266 publish_page action YES 1
267 publish_phone action no 1
268 publish_post action no 1
269 query filter no 1
270 query_string filter no 1
271 query_vars filter no 1
272 rdf_header action no 1
273 rdf_item action no 1
274 rdf_ns action no 1
275 register filter no 1
276 register_form action YES 1
277 register_post action YES 1
278 registration_errors filter YES 1
279 request filter YES 1
280 restrict_manage_posts action YES 1
281 retreive_password action no 1
282 retrieve_password action no 1
283 rewrite_rules filter no 1
284 rewrite_rules_array filter no 1
285 richedit_pre filter no 2
286 role_has_cap filter no 1
287 root_rewrite_rules filter no 1
288 rss2_head action no 2
289 rss2_item action no 1
290 rss2_ns action no 1
291 rss_head action no 1
292 rss_item action no 1
293 sanitize_comment_cookies action no 1
294 sanitize_title filter no 1
295 sanitize_user filter no 1
296 save_post action no 1
297 search_rewrite_rules filter no 1
298 send_headers action YES 1
299 set_current_user action no 1
300 show_password_fields filter no 3
301 show_user_profile action no 1
302 shutdown action no 1
303 simple_edit_form action no 1
304 single_cat_title filter no 3
305 single_post_title filter no 2
306 status_save_pre filter no 1
307 stylesheet filter no 1
308 stylesheet_directory filter no 1
309 stylesheet_directory_uri filter no 1
310 stylesheet_uri filter no 1
311 switch_theme action no 3
312 template filter no 1
313 template_directory filter no 1
314 template_directory_uri filter no 1
315 template_redirect action no 1
316 theme_root filter no 1
317 theme_root_uri filter no 1
318 the_author filter no 1
319 the_author_email filter no 1
320 the_category filter no 2
321 the_category_rss filter no 1
322 the_content filter no 3
323 the_content_rss filter no 1
324 the_date filter no 1
325 the_editor filter YES 1
326 the_editor_content filter YES 1
327 the_excerpt filter no 2
328 the_excerpt_rss filter no 1
329 the_modified_date filter YES 1
330 the_modified_time filter no 1
331 the_permalink filter no 2
332 the_posts filter no 1
333 the_time filter no 1
334 the_title filter no 9
335 the_title_rss filter no 2
336 the_weekday filter no 1
337 the_weekday_date filter no 1
338 thumbnail_filename filter no 1
339 tinymce_before_init action no 1
340 tiny_mce_config_url filter YES 1
341 title_edit_pre filter no 1
342 title_save_pre filter no 2
343 trackback_post action no 1
344 update_attached_file filter YES 1
345 update_option_{$option_name} note action no 1
346 update_user_query filter no 1
347 uploading_iframe_src filter no 2
348 upload_dir filter no 1
349 upload_files_{$tab} note action YES 1
350 upload_mimes filter no 1
351 user_can_richedit filter YES 1
352 user_has_cap filter no 1
353 user_register action no 1
354 user_registration_email filter YES 1
355 validate_username filter no 1
356 wp action YES 1
357 wp_ajax_{$action} note action YES 1
358 wp_authenticate action no 1
359 wp_blacklist_check action no 1
360 wp_create_file_in_uploads filter YES 3
361 wp_create_thumbnail filter YES 1
362 wp_delete_file filter YES 3
363 wp_dropdown_cats filter YES 1
364 wp_dropdown_pages filter YES 1
365 wp_footer action no 1
366 wp_generate_attachment_metadata filter YES 1
367 wp_get_attachment_metadata filter YES 1
368 wp_get_attachment_thumb_file filter YES 1
369 wp_get_attachment_thumb_url filter YES 1
370 wp_get_attachment_url filter YES 1
371 wp_handle_upload filter YES 2
372 wp_head action no 1
373 wp_insert_post action no 1
374 wp_list_categories filter YES 1
375 wp_list_pages filter no 1
376 wp_list_pages_excludes filter YES 1
377 wp_login action no 1
378 wp_logout action no 1
379 wp_meta action no 1
380 wp_mime_type_icon filter YES 1
381 wp_print_scripts action YES 1
382 wp_redirect filter YES 1
383 wp_set_comment_status action no 2
384 wp_thumbnail_creation_size_limit filter YES 1
385 wp_thumbnail_max_side_length filter YES 1
386 wp_title filter no 1
387 wp_update_attachment_metadata filter YES 1
388 wp_upload_tabs filter YES 1
389 xmlrpc_methods filter no 1
390 xmlrpc_publish_post action YES 1
391 year_link filter no 2
392 _get_page_link filter YES 1
393 {$hook} note action YES 2
394 {$page_hook} note action no 1
395 {$tag} note action no 2
396 {$tag} note filter no 1
397 {$type}_template note filter no 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.