对于想拦截某些页面请求或判断页面执行的Hook、了解 WordPress 的执行过程，你可以通过下列代码得到。
// 输出当前页面执行的hook和顺序
add_action( 'shutdown', function(){
print_r( $GLOBALS['wp_actions'] );
});
你会得到类似这样的内容
muplugins_loaded
registered_taxonomy
registered_taxonomy
registered_taxonomy
registered_taxonomy
registered_taxonomy
registered_post_type
registered_post_type
registered_post_type
registered_post_type
registered_post_type
plugins_loaded
sanitize_comment_cookies
setup_theme
unload_textdomain
load_textdomain
after_setup_theme
load_textdomain
load_textdomain
auth_cookie_malformed
auth_cookie_valid
set_current_user
init
registered_post_type
registered_post_type
registered_post_type
registered_post_type
registered_post_type
registered_taxonomy
registered_taxonomy
registered_taxonomy
registered_taxonomy
registered_taxonomy
widgets_init
register_sidebar
register_sidebar
register_sidebar
wp_register_sidebar_widget
wp_register_sidebar_widget
wp_register_sidebar_widget
wp_register_sidebar_widget
wp_register_sidebar_widget
wp_register_sidebar_widget
wp_register_sidebar_widget
wp_register_sidebar_widget
wp_register_sidebar_widget
wp_register_sidebar_widget
wp_register_sidebar_widget
wp_register_sidebar_widget
wp_loaded
parse_tax_query
parse_tax_query
posts_selection
template_redirect
admin_bar_init
add_admin_bar_menus
get_header
wp_head
wp_enqueue_scripts
wp_print_styles
wp_print_scripts
get_template_part_content
begin_fetch_post_thumbnail_html
end_fetch_post_thumbnail_html
get_template_part_content
get_template_part_content
get_template_part_content
get_template_part_content
get_template_part_content
get_template_part_content
get_template_part_content
get_template_part_content
get_template_part_content
begin_fetch_post_thumbnail_html
end_fetch_post_thumbnail_html
get_sidebar
dynamic_sidebar_before
dynamic_sidebar
dynamic_sidebar_after
get_footer
twentytwelve_credits
wp_footer
wp_print_footer_scripts
wp_before_admin_bar_render
wp_after_admin_bar_render
shutdown优化一下显示方式，以便更快的查看执行次数
add_action( 'shutdown', function(){
foreach( $GLOBALS['wp_actions'] as $action => $count )
printf( '%s (%d)
' . PHP_EOL, $action, $count );
});
muplugins_loaded (1)
registered_taxonomy (10)
registered_post_type (10)
plugins_loaded (1)
sanitize_comment_cookies (1)
setup_theme (1)
unload_textdomain (1)
load_textdomain (3)
after_setup_theme (1)
auth_cookie_malformed (1)
auth_cookie_valid (1)
set_current_user (1)
init (1)
widgets_init (1)
register_sidebar (3)
wp_register_sidebar_widget (12)
wp_loaded (1)
parse_request (1)
send_headers (1)
parse_tax_query (2)
parse_query (1)
pre_get_posts (1)
posts_selection (1)
wp (1)
template_redirect (1)
wp_default_scripts (1)
wp_default_styles (1)
admin_bar_init (1)
add_admin_bar_menus (1)
get_header (1)
wp_head (1)
wp_enqueue_scripts (1)
wp_print_styles (1)
wp_print_scripts (1)
loop_start (1)
the_post (10)
get_template_part_content (10)
begin_fetch_post_thumbnail_html (2)
end_fetch_post_thumbnail_html (2)
loop_end (1)
get_sidebar (1)
dynamic_sidebar_before (1)
dynamic_sidebar (1)
dynamic_sidebar_after (1)
get_footer (1)
twentytwelve_credits (1)
wp_footer (1)
wp_print_footer_scripts (1)
admin_bar_menu (1)
wp_before_admin_bar_render (1)
wp_after_admin_bar_render (1)
shutdown (1)