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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 |
|---|---|
| 224 | } elseif ( !$update ) { |
| 225 | $user = new WP_User($user_id); |
| 226 | $user->set_role(get_option('default_role')); |
| 227 | } |
| 228 | |
| 229 | wp_cache_delete($user_id, 'users'); |
| 230 | wp_cache_delete($user_login, 'userlogins'); |
| 231 | |
| 232 | if ( $update ) |
| 233 | do_action('profile_update', $user_id, $old_user_data); |
| 234 | else |
| 235 | do_action('user_register', $user_id); |
| 236 | |
| 237 | return $user_id; |
| 238 | } |
| 239 | |
| 240 | /** |
| 241 | * Update an user in the database. |
| 242 | * |