原文地址：https://codex.wordpress.org/Plugin_API/Action_Reference
| muplugins_loaded | After must-use plugins are loaded. |
| registered_taxonomy | For category, post_tag, etc. |
| registered_post_type | For post, page, etc. |
| plugins_loaded | After active plugins and before pluggable functions are loaded. |
| sanitize_comment_cookies | When comment cookies are sanitized. |
| setup_theme | Before the theme is loaded. |
| load_textdomain | For the default domain |
| after_setup_theme | Generally used to initialize theme settings/options. This is the first action hook available to themes, triggered immediately after the active theme’s functions.php file is loaded. add_theme_support() should be called here, since the init action hook is too late to add some features. At this stage, the current user is not yet authenticated. |
| auth_cookie_malformed | |
| auth_cookie_valid | |
| set_current_user | |
| init | Typically used by plugins to initialize. The current user is already authenticated by this time. |
| └─ widgets_init | Used to register sidebars. Fired at ‘init’ priority 1 (and so before ‘init’ actions with priority ≥ 1!) |
| register_sidebar | For each sidebar and footer area |
| wp_register_sidebar_widget | For each widget |
| wp_default_scripts | (ref array) |
| wp_default_styles | (ref array) |
| admin_bar_init | |
| add_admin_bar_menus | |
| wp_loaded | After WordPress is fully loaded |
| parse_request | Allows manipulation of HTTP request handling (ref array) |
| send_headers | Allows customization of HTTP headers (ref array) |
| parse_query | After query variables are set (ref array) |
| pre_get_posts | Exposes the query-variables object before a query is executed. (ref array) |
| posts_selection | Used by caching plugins. |
| wp | After WP object is set up (ref array) |
| template_redirect | Before determining which template to load. |
| get_header | Before the header template file is loaded. |
| wp_enqueue_scripts | When scripts and styles are enqueued. |
| twentyeleven_enqueue_color_scheme | (Specific to Twenty Eleven) |
| wp_head | Used to print scripts or data in the head tag on the front end. |
| wp_print_styles | Before styles in the $handles queue are printed. |
| wp_print_scripts | Before scripts in the $handles queue are printed. |
| get_search_form | |
| loop_start | (ref array) |
| the_post | (ref array) Allows modification of the post object immediately after query |
| get_template_part_content | Template part for the content |
| loop_end | (ref array) |
| get_sidebar | Before the sidebar template file is loaded. |
| dynamic_sidebar | Before a widget’s display callback is called. |
| get_search_form | |
| pre_get_comments | (ref array) |
| wp_meta | Before displaying echoed content in the sidebar. |
| get_footer | Before the footer template file is loaded. |
| get_sidebar | Before the sidebar template file is loaded. |
| twentyeleven_credits | (Specific to Twenty Eleven) |
| wp_footer | Before determining which template to load. |
| wp_print_footer_scripts | When footer scripts are printed. |
| admin_bar_menu | (ref array) |
| wp_before_admin_bar_render | Before the admin bar is rendered. |
| wp_after_admin_bar_render | After the admin bar is rendered. |
| shutdown | Before PHP execution is about to end. |