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Hooks in wp-includes/functions.php

WP version: 2.8

Important! Some hooks get applied in multiple files. If you are trying to figure out what a specific hook does, you need to look in all the files that apply the hook. Click the "details" link next to any hook for more information.

Hook Type New? File
1 upload_mimes filter no wp-includes/functions.php
2 deprecated_file_included action no wp-includes/functions.php
3 deprecated_function_run action no wp-includes/functions.php
4 do_robotstxt action no wp-includes/functions.php
5 {$hook} note action no wp-includes/functions.php
6 add_option_{$name} note action no wp-includes/functions.php
7 update_option_{$option_name} note action no wp-includes/functions.php
8 timezone_support filter no wp-includes/functions.php
9 deprecated_file_trigger_error filter no wp-includes/functions.php
10 deprecated_function_trigger_error filter no wp-includes/functions.php
11 explain_nonce_{$verb}-{$noun} note filter no wp-includes/functions.php
12 ext2type filter no wp-includes/functions.php
13 upload_dir filter no wp-includes/functions.php
14 status_header filter no wp-includes/functions.php
15 pre_update_option_{$option_name} note filter no wp-includes/functions.php
16 all_options filter no wp-includes/functions.php
17 pre_option_{$option->option_name} note filter no wp-includes/functions.php
18 option_{$setting} note filter no wp-includes/functions.php
19 pre_option_{$setting} note filter no wp-includes/functions.php
20 date_i18n filter YES wp-includes/functions.php
21 nocache_headers filter YES wp-includes/functions.php
22 explain_nonce_{$action} note filter YES wp-includes/functions.php
23 load_default_widgets filter YES wp-includes/functions.php
24 transient_{$transient} note filter YES wp-includes/functions.php
25 timezone_support filter YES wp-includes/functions.php
26 pre_transient_{$transient} note filter YES wp-includes/functions.php
27 number_format_i18n filter YES wp-includes/functions.php

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.