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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 1845 | do_action( 'profile_update', $user_id, $old_user_data ); |
| 1846 | } else { |
| 1847 | /** |
| 1848 | * Fires immediately after a new user is registered. |
| 1849 | * |
| 1850 | * @since 1.5.0 |
| 1851 | * |
| 1852 | * @param int $user_id User ID. |
| 1853 | */ |
| 1854 | do_action( 'user_register', $user_id ); |
| 1855 | } |
| 1856 | |
| 1857 | return $user_id; |
| 1858 | } |
| 1859 | |
| 1860 | /** |
| 1861 | * Update a user in the database. |
| 1862 | * |
| 1863 | * It is possible to update a user's password by specifying the 'user_pass' |