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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 |
|---|---|
| 197 | /** |
| 198 | * Fires immediately after a user is added to a site. |
| 199 | * |
| 200 | * @since MU |
| 201 | * |
| 202 | * @param int $user_id User ID. |
| 203 | * @param string $role User role. |
| 204 | * @param int $blog_id Blog ID. |
| 205 | */ |
| 206 | do_action( 'add_user_to_blog', $user_id, $role, $blog_id ); |
| 207 | wp_cache_delete( $user_id, 'users' ); |
| 208 | restore_current_blog(); |
| 209 | return true; |
| 210 | } |
| 211 | |
| 212 | /** |
| 213 | * Remove a user from a blog. |
| 214 | * |
| 215 | * Use the 'remove_user_from_blog' action to fire an event when |