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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 |
|---|---|
| 1878 | |
| 1879 | /** |
| 1880 | * Fires immediately after the given user's cache is cleaned. |
| 1881 | * |
| 1882 | * @since 4.4.0 |
| 1883 | * |
| 1884 | * @param int $user_id User ID. |
| 1885 | * @param WP_User $user User object. |
| 1886 | */ |
| 1887 | do_action( 'clean_user_cache', $user->ID, $user ); |
| 1888 | |
| 1889 | // Refresh the global user instance if the cleaning current user. |
| 1890 | if ( get_current_user_id() === (int) $user->ID ) { |
| 1891 | $user_id = (int) $user->ID; |
| 1892 | $current_user = null; |
| 1893 | wp_set_current_user( $user_id, '' ); |
| 1894 | } |
| 1895 | } |
| 1896 | |